HomeMy WebLinkAbout2020-05-04; Traffic and Mobility Commission; ; TRAFFIC CALMING ON COLLEGE BOULEVARDItem 4
Meeting Date: May 4, 2020
To: Traffic and Mobility Commission
Staff Contact: John Kim, City Traffic Engineer
John.Kim@carlsbadca.gov or 760-602-2757
Tom Frank, Transportation Director
Tom.Frank@carlsbadca.gov or 760-602-2766
Subject: Provide traffic calming recommendations for College Boulevard.
Recommended Action
Support staff’s recommendation to City Council regarding traffic calming recommendation for
Option 1 for College Boulevard.
Executive Summary
On June 11, 2019, a Minute Motion was proposed by Council Member Schumacher, seconded
by Council Member Hamilton, to bring back an analysis of changing the physical character
specifically for traffic calming on the following streets: College Boulevard from Carlsbad Village
Drive to Sage Creek High School, Tamarack Avenue from Skyline Road to Carlsbad Boulevard,
and Carlsbad Boulevard from the Agua Hedionda Trailhead to State Street. The Motion carried
unanimously 5/0.
On Sept. 24, 2019, staff presented to City Council a presentation on traffic calming
recommendations for the above referenced portions of College Boulevard, Tamarack Avenue
and Carlsbad Boulevard. After hearing staff’s recommendation to install speed feedback signs
on College Boulevard to address speeding concerns, a Minute Motion was proposed by Council
Member Schumacher, seconded by Council Member Blackburn, to bring back to Council options
and analysis, including unintended consequences, on physical changes to the College Boulevard
segment, from Carlsbad Village Drive to Cannon Road. Motion carried 4/0/1.
Discussion
Traffic calming on residential streets is formalized through the Carlsbad Residential Traffic
Management Program (CRTMP). Currently, the CRTMP offers traffic calming strategies for
residential streets and features tools such as speed cushions, speed tables and traffic circles
that are intended for low volume/low speed streets. Residential streets, as defined by the
California Vehicle Code, are unique in that no engineering and traffic survey (including a speed
survey) is required to post a 25-mile per hour (mph) speed limit on a residential street.
Prevailing speeds may be higher than the posted speed limit; therefore, a traffic calming
program may be beneficial to help encourage drivers to drive closer to the posted speed limit in
those situations.
On all other streets in the city, the posted speed limit must have a valid engineering and traffic
survey and be posted within 5 mph of prevailing speeds, per the requirements of the California
Vehicle Code.
College Boulevard Background
College Boulevard from the northern City limits to Cannon Road is a not defined as a residential
street and therefore not eligible for the CRTMP process as currently written. College Boulevard
is designated as an arterial street in the General Plan Mobility Element. Arterial streets are
described by the General Plan Mobility Element as, “primary vehicle routes through the city for
both local and regional vehicle trips.” College Boulevard was built circa 2000 to major arterial
standards in accordance with the prior General Plan Circulation Element, designed to carry
20,000-40,000 vehicles per day at 50 mph. Recent traffic counts indicate that the average daily
traffic (ADT) is approximately 22,000 vehicles per day. The roadway speed limit is currently
posted at 45 mph, consistent with the required engineering and traffic survey. College
Boulevard features two vehicle lanes in each direction separated by a raised median and
signalized intersections where warranted. Marked bicycle lanes are provided on both sides of
the roadway and no on-street parking is allowed. The travel-lane widths were reduced to
eleven feet and bicycle lanes recently were enhanced with painted buffers to help separate
bicyclists from vehicular traffic. Primary land uses along this portion of the roadway are single-
family residential developments, Calavera Hills Elementary and Middle Schools and Sage Creek
High School on the northeast corner of College Boulevard and Cannon Road. There are also
three trail head access points to the Calavera Hills Nature Preserve along the east side of
College Boulevard between Carlsbad Village Drive and Cannon Road.
As part of this report, staff investigated collision records. Reported collisions, while not the sole
determinant in identifying proposed improvements, can help staff identify possible collision
patterns and help staff prioritize resources. Querying our collision database for the period
between Jan. 1, 2019 to Dec. 31, 2019, four collisions were reported on College Boulevard
between Cannon Road and Carlsbad Village Drive. Two collisions were reported between
Carlsbad Village Drive and the North City Limits. One of these collisions is common to both
queries (at the intersection of College Boulevard and Carlsbad Village Drive) so there was a total
of five collisions reported along the entire corridor. All reported collisions were property
damage only (no injuries) and none of the reported collisions involved a pedestrian or bicyclist.
For comparative purposes, we can look at the State of California’s collision data published in
2016. For a similar classification of roadway (4 lane divided highway in an urban setting), the
collision rate for California state highways was found to be 1.43 collisions per million vehicle
miles. This figure can be calculated by multiplying the number of collisions by 1,000,000 and
dividing by the number of vehicle miles traveled on that corridor. Comparatively, the collision
rate for College Boulevard between Cannon Road and Carlsbad Village Drive was less than the
state average at 0.48 collisions per million vehicle miles and 0.16 collisions per million vehicle
miles in 2019. The combined collision rate for the entire corridor was found to be less than the
state average at 0.33 collisions per million vehicle miles in 2019.
As a result of the concerns brought to our attention, staff has been working with residents,
parents, principals, and the police department to enhance safety on College Boulevard over the
past several years. Some of the improvements that city staff have already implemented include:
• Traffic signal modification at College Boulevard and Rich Field Drive – A supplemental
traffic signal indication has been installed on the southwest corner of College Boulevard
and Rich Field Drive to address concerns with vehicles running red lights. This
supplemental traffic signal indication increases visibility of the signal for northbound
motorists.
• Portable Speed Feedback signs –Temporary speed feedback signs have been deployed
on College Boulevard, Rich Field Drive and Strata Drive to educate drivers of their
traveling speed and to encourage speed reduction.
• Adult Crossing Guards on College Boulevard and Tamarack Avenue (N & S) – To assist
school pedestrians going to and leaving school, staff has worked with the police
department to provide adult crossing guards on College Boulevard at both Tamarack
Avenue north and south intersections during the school hours.
• Traffic signal timing enhancements at College Boulevard and Tamarack Avenue (N & S) –
Staff has implemented Lead Pedestrian Intervals to enhance pedestrian safety. This
allows pedestrians to begin their crossing while all the vehicle signal indications are still
red, giving pedestrians, a head start when entering the intersection. This feature
increases the visibility of crossing pedestrians, enhances safety for pedestrians who may
be slower to start into the intersection and increases the likelihood of motorists yielding
to pedestrians. The duration of the lead pedestrian interval has also been extended
recently.
On Jan. 27, 2020, staff met with residents concerned with traffic safety in the vicinity of
Calavera Hills Elementary and Middle Schools, with a focus on the portion of College Boulevard
between Carlsbad Village Drive and the North City Limits. Based on the concerns heard at the
meeting, staff committed to issuing work orders for TURNING VEHICLES YIELD TO PEDESTRIANS
signs at the intersection of College Boulevard and Tamarack Avenue (North and South). After
completion of this work order, all approaches to these two intersections will have signage that
requires turning motorists to yield to pedestrians.
Staff is currently investigating a request for NO RIGHT TURN ON RED signs at the intersection of
College Boulevard and Tamarack Avenue (North and South). Since this sign would impact peak
hour school traffic and possibly result in increased congestion, staff needs to conduct a more
formal evaluation including looking at turning movement volumes.
Traffic Management Options
In 2015, the City updated the General Plan and included a new Mobility Element to replace the
previous Circulation Element. The Mobility Element utilizes a complete streets approach to
help balance the needs of all users of the street, including motorists, pedestrians, bicycles,
children, persons with disabilities, seniors, movers of commercial goods, and users of public
transportation.
As explained in the Mobility Element, much of Carlsbad’s transportation system has been built
within the last 30 years, concurrent with the city’s physical expansion. The transportation
emphasis during this period has been on improving travel by the automobile, within the
framework provided by Proposition E (commonly referred to as the Growth Management Plan)
passed by Carlsbad voters in 1986. The 1994 General Plan and the Growth Management Plan
helped assure that necessary infrastructure was provided as the city grew and developed.
The transportation system envisioned in the 1994 General Plan has largely been realized, with
the majority of the street infrastructure constructed to its ultimate configuration. As the city
looks increasingly to infill development rather than outward expansion, the primary
transportation issues now relate to protecting and enhancing the community’s quality of life, as
reflected in the core values of the Carlsbad Community Vision. The community’s vision includes
improving pedestrian and bicycle connectivity throughout the city, and a balanced
transportation system, rather than a singular focus on automobile movement.
Upon completion of the city’s transportation infrastructure, the new Mobility Element was
intended to give the city flexibility on how the streets are utilized, based on typology. We can
consider options on improvements to streets that would help achieve the complete streets
vision found in the Mobility Element. Each option typically has some potential advantages
(pros) and disadvantages (cons). Additionally, some of the options may include unintended
consequences. When considering options, it is important to remember that College Boulevard
is defined as an Arterial in the Mobility Element serving as a primary vehicle route through the
city for both local and regional vehicle trips. While the Mobility Element does recommend that
vertical traffic calming techniques (such as speed tables, humps, etc.) should not be considered,
it allows special considerations on arterials within proximity to schools to enhance Safe Routes
to Schools for pedestrians and bicyclists.
The mobility element lists several related policies regarding street design and connectivity
including:
3-P.15 Evaluate methods and transportation facility improvements to promote biking,
walking, safer street crossings, and attractive streetscapes. The City Council shall have
the sole discretion to approve any such road diet or vehicle traffic calming
improvements that would reduce vehicle capacity to or below a LOS D; this also applies
to streets where the vehicle is not subject to the MMLOS standard as specified in Table
3-1.
3-P.17 Consider innovative design and program solutions to improve the mobility,
efficiency, connectivity, and safety of the transportation system. Innovative design
solutions include, but are not limited to, traffic calming devices, roundabouts, traffic
circles, curb extensions, separated bicycle infrastructure…
While changing the design of a road is possible, any changes should be thoroughly studied and
publicly vetted considering how these changes may alter travel patterns throughout the
surrounding road network. College Boulevard serves as a primary commuter route through the
city with many users ultimately moving between State Route 78 (SR78) and Interstate 5 (I-5),
among other routes included in the City’s road network provided in Exhibit 1.
Traffic seeks equilibrium. Changes to College Boulevard may impact critical congestion points
and traffic patterns throughout the area. The current widening of I-5 between Manchester
Avenue and SR78 is targeted for completion in 2022. When completed, the improvements will
likely move the congestion points along the I-5 corridor and change commuter patterns both
regionally and locally. The congestion at the SR78/I-5 interchange during the morning peak will
likely resume once traffic demand returns post-COVID-19 and this interchange is not
programed for replacement in the foreseeable future. With the return of congestion associated
with normal traffic patterns, morning commuters will resume searching for the quickest path
from west bound SR78 to south bound I-5. The same travel patterns will likely reverse during
the afternoon commute. Navigation apps such as Waze and Google Maps help find the
quickest paths for commuters and often divert trips from congestion freeways onto local
streets to the dismay of some neighborhoods along those programmed routes.
An increase in capacity of these commuter routes through the city will likely further increase
traffic volume on the local street when the adjacent freeway is congestion. Likewise, a
reduction of roadway capacity will redistribute the displaced vehicles to an alternate route.
Traffic congestion tends to maintain equilibrium, whereas traffic volumes increase to the point
that congestion delays discourage additional peak-period vehicle trips. Expanding
congested roads attracts latent demand, shifts trips from other routes, times and modes, and
encourage longer and more frequent travel.
In response to council direction, staff has developed several options for traffic calming
consisting of physical design and other measures to put in place on College Boulevard to reduce
vehicle speeds or address other concerns to improve pedestrian safety. Considering that most
of the public feedback received was focused at the intersections along College Boulevard,
staff’s presented options focuses mainly on intersection improvements. A summary of the
traffic calming options for College Boulevard is presented in Exhibit 2 and are further explained
below.
Option 1 – Radar Speed Feedback Signs
Based on concerns associated with drivers violating the posted speed limit of 45 mph on
College Boulevard and in compliance with the recommendations found in the General Plan
Mobility Element, staff is recommending installation of up to eleven permanent speed feedback
signs along College Boulevard. In addition to the 6-8 speed feedback signs that were originally
recommended between Cannon Road and Carlsbad Village Drive, staff recommends increasing
the scope of this effort to include the concerns surrounding the schools in the Calavera Hills
area and add speed feedback signs between Carlsbad Village Drive and the north city limits.
These devices will serve to educate the driving public and have been found to help reduce
speeding. The Police Department will also continue to provide ongoing enforcement on College
Boulevard. The new speed feedback signs will have the ability to transmit data directly to our
Traffic Management Center and provide staff with information so that our Police Department
can provide focused enforcement based on actual speeding behavior. Sufficient funds exist in
the FY 2019-20 Public Works budget to accommodate up to eleven speed feedback signs and
these will take approximately 8-10 months to design and install.
Option 2 - Redesign the road segment with a lower design speed
Redesign of two travel lanes and traffic signals redesigned at lower design speed and more
pedestrian friendly intersections. Improvements would include narrower travel lanes, revised
medians, reduced corner and horizontal deflection radii, and revised access pathways. The
advantages of this option include improving safety by reducing the vehicle speeds and shorter
pedestrian crossing distances. Additionally, drivers are familiar with two vehicular travel lanes
and signals. The challenges with the option include that it maintains the existing traffic signals
which have their own challenges relating to driver behavior, cost, reduced roadway capacity,
unknown public support, and it would require an extensive public input process. Considering
the option would result in a reduction in capacity from the existing conditions, the Growth
Management Program would need to be revised to address the change. An unintended
consequence is the option may increase travel times along the corridor due to increased
congestion and redirect traffic to other routes.
Option 3 – Single-Lane Roundabouts
Redesign the intersections with single-lane roundabouts and a road diet converting the existing
two-vehicular lane roadway in each direction to a one-lane in each direction facility. The
advantages of this option include it addresses the intersection traffic signal safety issues and it
keeps existing median. The challenges with the option include the cost, reduced roadway
capacity, public support is unknown, and it would require an extensive public input process.
The unintended consequence of the option may include redirecting traffic to other routes due
to increased travel times, and the need to revise the Growth Management Plan considering the
option would result in a reduction in capacity from the existing conditions.
Option 4 – Two-Lane roundabouts
Redesign the intersections with two-lane roundabouts and maintain two vehicle lanes and
buffered bicycle lanes in each direction. The advantages of this option include it addresses the
intersection traffic signal safety and efficiency issues and it keeps the existing median. The
challenges with the option include the cost, the need for additional right-of-way to
accommodate the two-lane roundabouts, the option would increase the capacity of the road
segment, public support is unknown, and it would require an extensive public input process.
Option 4 could result in an increase in capacity to approximately 40,000 average daily trips for
this road segment. This significant increase in capacity could result in increased traffic volumes
and congestion on other arterial road segments that connect to this segment of College
Boulevard if implemented.
Option 5 - Vertical Deflection – Speed Tables and Cushions
The vertical deflection option would include speed tables at the crosswalks at each intersection,
and speed cushions at regular intervals to promote speeds to maintain an average speed of 35
to 40 miles per hour (mph). The tables and cushions would be designed to encourage crossing
speeds approximately 20 to 30 mph. The challenges with the option would the additional
slowing and accelerating along the segment caused by the additional measures. This option
would also be the least environmentally sustainable alternative because drivers would need to
slow down as they approach the measures and speed up after traversing them, they burn more
fuel, generate more noise, and emissions, and therefore. Additionally, the capacity of the
street segment would be reduced due to the lower vehicle speeds.
The General Plan Mobility Element cautions against certain types of traffic calming on arterial
streets, stating, “vertical traffic calming techniques (such as speed tables, humps, etc.) should
not be considered.” This restriction is based on the relatively high speeds and vehicle volumes
that are present on arterial streets, which prioritize vehicular travel over pedestrians and
bicyclists. While the caution regarding vertical deflection is supported by staff, the Mobility
Element also includes that special considerations for arterial streets within close proximity to
schools to enhance Safe Routes to Schools for pedestrians and bicyclists.
A significant concern regarding the vertical deflection on arterial streets is the possible
unintended consequence of proliferation of vertical deflection along other arterials throughout
the City. The concerns with vertical deflection traffic calming measures include environmental
impacts of both noise, pollution, and the long-term maintenance costs for users related to
vehicle wear.
Option 6 - Pedestrian Bridge
During previous public meetings, a suggestion was made to consider a pedestrian bridge.
Pedestrian Bridges tend to work well when there is grade separated barriers that need to be
crossed like railroad tracks or freeways. At standard arterial at grade intersections, pedestrian
bridges are a challenge considering pedestrians typically chose the quickest and most
convenient path of travel. Pedestrian bridges many involve stairs or elevators which slow the
trip. As an example, the City of Dana Point constructed a pedestrian bridge over SR1 near Dana
Point Harbor Drive, however, most pedestrians still choose to use the at-grade crosswalks at
the nearby intersection. In 2005, The City of Oceanside also removed a pedestrian bridge that
was located on Mission Avenue and improved at-grade pedestrian crosswalks near Mission
Elementary School. Considering the low cost to benefit ratio for a pedestrian bridge, this
option is not recommended for further consideration.
Considering the analysis of the options including the advantages, disadvantages, unintended
consequences, staff is recommending Option 1 as the preferred option. If issues are identified
following the review of the data obtained after implementation of Option 1, additional
measures can be considered.
Next Steps
Following the review of the item by the Traffic and Mobility Commission, staff will include the
T&MC’s comments and recommendation in the subject City Council staff report. The item is
tentatively scheduled for the May 19 City Council agenda.
Exhibits
1. Vicinity Map – Mobility Element
2. Physical Options Summary for College Boulevard North of Cannon Road
Exhibit 1: Mobility Element
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Exhibit 2 – Physical Options for College Boulevard North of Cannon Road College Boulevard – Physical Road Design Options Analysis No Option Description Advantage (Pros) Challenges (Cons) Unintended consequences Approx. Cost Range 1 Radar feedback signs Lowest cost alternative Gain information and data regarding existing traffic operations to help with enforcement and analyze if additional measures are needed No change to challenges of signalized intersection Sign Pollution Waning driver response May promote requests for additional radar feedback signs in other locations. $195K 2 Redesign the road segment with a lower design speed Drivers familiar with two vehicular travel lanes and signals. Does not address signal challenges Reduces Capacity questionable public support would require an extensive public input process. Possibly redirect traffic to other routes. Revise the Growth Management Plan $4 to $6 million 3 One lane roundabouts and one vehicular travel lane and buffered bicycle lanes Addresses the intersection safety issues, keeps existing median Cost Limits vehicular capacity near 20k ADT Questionable public support Would require long extensive public input process. Possibly redirect traffic to other routes. Revise the Growth Management Plan $6 to $8 million 4 Two lane roundabouts and two travel lanes Improves the efficiency of the intersection and the capacity of the road segment. Cost May increase higher vehicular capacity near 40k ADT Multilane Roundabouts are less ped friendly. Create additional congestion points on other arterial segments. $8 to $12 million
Exhibit 2 – Physical Options for College Boulevard North of Cannon Road Questionable public support Would require long extensive public input process 5 Vertical deflection including raised speed tables at intersections and speed cushions in‐between intersections Costs are lower than other options. Questionable public support Would require substernal public input process Additional slowing and accelerating along corridor Increased fuel use, emissions and greenhouse gases Other parts of the community may request the vertical deflection and results in proliferation throughout town. Environmental Impacts noise and pollution. $2 to $4 million 6 Pedestrian Bridge Creates separated pedestrian pathway away from vehicular traffic. Cost Low cost to benefit ratio Pedestrians prefer the quickest route and tend not to use bridge crossings Long term maintenance costs. Difficult conforming with ADA $1 to $3 million
May 4, 2020 Traffic and Mobility Commission Comments and Questions by Pete Penseyres
Item 2:
What were the results of the public survey regarding the two alternatives for trenching? How many
votes for each option?
One NextDoor post from a Barrio resident suggested that if residents were voting for the long extension,
that they make a comment that the crossing at Chestnut should remain bikes and pedestrians only. Why
was that option not included in the survey? When I tried to add this comment to my survey response, I
did not see a place to add the comment. Will there be another survey and more public education/input
before the City provides the official recommendation on this issue? Since Chestnut has been chosen by
the City to receive pedestrian and bicycle enhancements by CalTrans and the street has been designated
as a future “bicycle boulevard” leading to the Coastal Rail Trail and the Beach by an overpass (or a bridge
if the trench is not constructed), opening another crossing to the beach for motorized traffic would
seem to defeat the objectives stated in the Barrio and Village Master Plan.
In addition, since Carlsbad Village Drive and Grand Ave will have overpasses, it is essential to provide
another motor vehicle overpass at Oak? What is the cost difference between a ped/bike vs motor
vehicle overpass that includes pedestrian and bicycle infrastructure? It seems that we are defeating the
primary purpose of traffic calming in the Village and Barrio plan by focusing on automobiles.
Item 3:
The southbound approach to PAR on Melrose includes a long Class II Bike Lane between the leftmost
RTO land and rightmost straight through lane. There are currently Bikes May Use Full Lane signs to
educate motorists and cyclists that they may use the RTO lanes to turn right or to transition to the
straight through Bike Lane. The approach is a steep grade which results in a high-speed differential
between cyclists and motorists. With the addition of the third lane and restriping, could there be
additional space to widen the bike lane and/or to paint it green to make it more visible? Two
experienced North County Cycle Club members were seriously injured there recently when a motorist
made an unsafe lane change. The addition of a third straight through lane may further reduce the
visibility of cyclists on this section of roadway.
Upon completion of this Project, I noted that with 7 travel lanes southbound plus 4 northbound and
Class II Bike lanes on both sides, LOS will STILL be deficient! Will it be the widest intersection in
Carlsbad?
If a bicyclist enters this intersection on PAR on a “stale” green light in either direction, will they have
enough time at 15 MPH (22 ft/sec) to get all the way across before ECR drivers get a green light? And if
more cyclists become so intimidated that they use the pedestrian PB’s to get across, how much will that
negatively impact the LOS?
There was an earlier Item from Commissioner by Commissioner Hunter regarding the northbound
Melrose lane stripping. It was to consider realignment of the lanes on the south approach to better align
drivers in the #1 through lane continue to use the #1 lane rather than the #2 lane so that drivers to their
right are not pushed toward the #4 transition lane which becomes a RTO lane. This was mentioned to
also potentially help northbound cyclists weave left to transition to the Bike Lane when the RTO lane
begins. I had asked if the hashed off space adjacent to the median could be moved to the right of the
double left turn lanes and to consider if that space could be used for a buffered LTO Bike lane to the
right of the vehicle LTO lanes. Is this a different CIP? When will it be brought to the Commission?
Item 4:
Exhibit 2 Item 5 typo “substernal” = “substantial”
Staff has provided an excellent menu of options for resolving the concerns of the public and City Council
with respect to Councilmember Schumacher’s Minute Motion, even including single as well as two lane
roundabout options.
Option 1 is the easiest, cheapest, and fastest to implement, but it appears to simply “kick the can
down the road” rather than address the concerns now. And as pointed out, it has many cons, including
the fact that it is unlikely to produce more than a limited and waning driver response.
Option 2 may best be described as “lipstick on a pig” as it retains the existing traffic lights with all of
their inherent safety, capacity, and delay issues. It is also costly and wasteful if it does not resolve the
concerns.
Option 3 appears to be the best solution to all safety concerns. My personal experiences with
roundabouts as a cyclist, pedestrian, and motorist in Australia as well as in my current home adjacent to
the Carlsbad Blvd./State St. roundabout have reinforced my strong preference for this people and
environmentally friendly, traffic calming/control device.
When I previously lived in Oceanside, I was a member of the Coast Highway Corridor Steering
Committee and Co-Chair of the Pedestrian and Bicycle Committee. Both citizen groups became stronger
proponents of single lane roundabouts along Coast Highway as they learned more about their
advantages.
The reduction of fatal crashes in roundabouts vs. traffic light or stop controlled intersections is typically
90%. Reference: City of Fort Worth, Texas website (http://fortworthtexas.gov/roundabouts/benefits/)
which uses FHWA studies and documents for the following discussion:
“Roundabouts are the safest type of at-grade intersection. They create slower speeds, fewer conflict
points for pedestrians and motorists, and reduced collision angles compared to stop sign or traffic signal
control. A national study of intersections converted to modern roundabouts had the following
significant findings:
• A reduction in collisions of all types of 40 percent.
• A reduction in injury collisions of 75 percent.
• A reduction in fatal and incapacitating collisions of about 90 percent.”
In the process of researching single lane roundabouts I found many more benefits but believe that the
safety advantages are overwhelming.
Education is key to overcoming opposition and to ensure proper usage by all users after they are
installed. There are websites where roundabouts have been installed in spite of heavy opposition where,
after installation, many opponents admitted that they were wrong. For example:
https://www.youtube.com/watch?v=dHnY8IGv1sY
My experience with teaching Traffic Skills 101 (aka Smart Cycling) and in riding with friends is that some
cyclists don’t like roundabouts until they learn how to ride through them correctly. Certified League of
American Bicyclists Instructors in San Diego County have included classroom presentations and, in
Oceanside and Carlsbad, on the road practice in safely navigating the Carlsbad roundabout. We first
dismount and become pedestrians and later ride through just as we would as motorists.
There is a video on the Carlsbad City website that connects to a video from the Federal Highway
Administration entitled “Modern Roundabouts, A Safer Choice” It has been viewed 484 times and can be
seen here:
https://www.youtube.com/watch?v=ZMpqH0kohaM&list=PLCEF0BD7835D6E0B0&index=4
Tips on how to use the Carlsbad roundabout were posted on the City Website when it was new in 2014
and can be seen here:
https://www.youtube.com/watch?v=XGc5aHbMfb4
Note that despite being on the City Website for more than 5 years, it has only been viewed 649 times.
There is also an excellent Power Point that was developed by John Kim for our Traffic Safety Commission
that I can’t find. These hard to find and little observed educational items can be overwhelmed by one
negative inflammatory Next Door or Facebook post based on emotion rather than facts.
This was done successfully by a relatively small group of South Oceanside residents who will retain their
end of Coast Highway as 4 lanes. The same result was accomplished in Solana Beach by another small
group opposed to all roundabouts in the City and specifically on Lomas Santa Fe.
Perhaps College Ave should not be the first arterial location to install single lane roundabouts due to the
potential capacity limitation/congestion and public opposition?
Single lane roundabouts were rejected on the Poinsettia extension, even though the LSA traffic analysis
showed that they would have provided LOS A for the foreseeable future and there was a “fresh palette”
along with more than adequate ROW that would have substantially reduced their cost compared to
removing and rebuilding the extra turn lanes, medians and traffic light infrastructure. That project was
taken to the City Council without our Commission recommendations since we received it after the
decision was made as an Information Only Item.
We had a discussion at the time, but arguments against it included a desire to maintain this little used
(13K ADT in 2035) road as a high speed 50 MPH multi lane arterial (using “typology”) with minimum
width 5’ unbuffered Bike Lanes and computer based Traffic Signal Management to platoon traffic and
even potentially punish speeding downhill traffic on Cassia street with Red light initiations and “No Right
Turn on Red” restrictions.
Perhaps our Commission should include a recommendation that City Council reconsider/reverse their
decision to install traffic lights on Poinsettia so that single lane roundabouts become more familiar and
accepted by the public?
Option 4 would also solve the traffic safety issues and would increase capacity beyond current pre-
COVID-19 usage. However, no two-lane roundabouts have been installed on any arterial in San Diego
County and would likely receive even more opposition.
In addition, although they still reduce fatal and serious injury crashed as well as single lane installations,
they do result in more property damage collisions. The following recent article in the Wall Street Journal
discussed this issue.
As noted in the WSJ article, “fender bender” crashes do increase upon installation of roundabouts.
Carlsbad experience was similar in that there were 20 reported crashes in the first two years, 17
occurred at night and 18 were DUI drivers. The “dirty little secret” of our roundabout is that it serves as
an “unmanned check point” which protects all other downstream motorists, cyclists and pedestrians.
Options 5 & 6 are not credible solutions for all the reasons stated.
Item 5:
The informal point system indicates 5 points for Collisions if Ped related. Is that 5 points for each
collision and if so, what period of time is used for that parameter? What was the basis for this? Should it
be higher?
Item 6:
For both sections of El Camino Real, the slight reduction in travel lane width to create a buffer for
cyclists will increase their comfort level and perhaps even increase cycling that displaces car trips for
commuting or shopping. The intersection treatment is important from a safety standpoint as a majority
of car/bike crashes take place when turning or lane change movements are made.
There are 5 intersections involved on El Camino Real from Faraday to Cannon. There are several more
from Arenal to Levante. How will the striping for the Bike Lanes be done at each of these intersections?
Will all of them have RTO lanes with the Bike lanes correctly placed to the left of the RTO lanes? If not,
how will the shared 11’ space be striped? Where will the green paint be applied? Will there be “Begin
Right Turn Lane Yield to Bikes” R4-4 signs installed at all locations where separate RTO lanes exist?
Where RTO lanes do not and will not exist, these “shared” lanes will need careful markings, signage, and
striping to prevent drivers from passing cyclists and making right turns illegally from the rightmost
through lane. As students from the Aviara Oaks middle school explained to us, one of the most common
car bike crashes occurs when drivers turn right across a cyclist’s path. The risk of high speed “right hook”
type crashes is high when motorists do not yield and merge into the bike lane when it begins to be
dashed.
Please supply the detailed striping, painting, and signage plans for review when they become available.
Item 7:
If possible, I would like a paper copy of this item to read without sitting in front of a computer screen. I
did not have enough time to read and comment on this item. However, after a quick scan, it appears
that the VMT guidelines contradict some of the actions we have recommended to improve LOS on
congested roadways, and especially to create 4 travel lanes on the Poinsettia extension without
considering the possibility of a road diet. or GHG saving roundabouts in place of more traffic lights.
1
May 4, 2020
Nathan Schmidt, AICP
Transportation Planning and Mobility Manager
Staff Liaison: Traffic and Mobility Commission
1635 Faraday Ave.
Carlsbad, CA 92008
Re: Agenda Item #4, May 4 T&MC Commission Meeting
Dear Mr. Schmidt,
We represent a group of residents, parents and school crossing guards
who are concerned about the safety of people, especially children, who
use College Boulevard to get to and from school. We ask that you share
this letter with all members of the Traffic and Mobility Commission
(TMC) and appropriate city staff.
First, we are very appreciative of you and Commissioner Linke’s visit to
our neighborhood on the morning of March 10th. You both had an
opportunity to speak with our crossing guards and our residents about
their concerns, experiences and ideas for improving street safety,
especially around Calavera Hills Elementary and Middle School. We
hope that this visit gave you additional insight and appreciation of the
challenges and risks we face living adjacent to an arterial road with high
speeds especially one where children have to cross to get to school.
Second, thank you for highlighting the Mobility Element in the Carlsbad
General Plan, which identifies complete and livable streets as a top
strategic focus area for the city. The report acknowledges that
historically, transportation projects have favored vehicle movement and
traffic control over other types of transportation. However, throughout
California, the nation and the world, best-in-class cities support a new
paradigm, one that prioritizes the reduction of vehicle traffic to improve
safety, air quality and congestion and promote the overall health and
welfare of communities. This shift promotes a broad-based plan of multi-
modal transportation that envisions enhanced walking, biking and public
transportation options rather than an emphasis on single-occupancy
vehicles. More important, however, decision makers at every level
2
choose to prioritize human life and pedestrian safety over vehicle
needs.
We understand that College Boulevard is a designated arterial street
and is not eligible for CRTMP as currently written. Fortunately, the
Carlsbad Livable Street Guide does allow for ‘special consideration on
arterials within proximity to schools to enhance Safe Routes to Schools
for pedestrians and bicyclists.’ By making our roads safer for
pedestrians, we increase the likelihood that families will walk or bike,
rather than drive the short distance to school thus reducing congestion,
pollution and the cost of road maintenance.
Third, thank you for a very detailed and thorough analysis of options to
address our concerns. We appreciate staff’s time to develop this report
and your responsiveness.
We surveyed the Calavera Hills Traffic Safety Group for their feedback
on the options presented and asked that they rank choice their
preferences. High speed on College Blvd continues to be of significant
concern. There was some variety of response in the actual ranking, but
overall agreement on preferred options, so we included the
respondents’ top three preferences as a percentage. Here are the
results:
Option 1: 92% favored
Option 2: 77% favored
Option 3: 8% favored
Option 4: 46% favored
Option 5: 15% favored
Option 6: 15% favored
Several residents pointed out that there should be a no right turn on red
signal (like in the Village) during peak hours turning right from Carlsbad
Village Drive onto College Blvd south. Also, our crossing guard would
like to know what could be done to improve the safety for children
crossing College Blvd. from Tamarack South. Currently, there is no left
turn lane or dedicated left turn signal for cars turning left onto College
Blvd north. The crossing guard is posted on the east side of College
Blvd at this intersection and frequently has to run into the street to
prevent cars from turning left when children are in the crossing. Based
on his direct experience, he is very concerned about this intersection.
3
Thank you for the opportunity to be heard and for soliciting input from
the residents who are most impacted by this issue. We look forward to a
continued dialogue and to seeing the expeditious implementation of
projects that improve the safety for our community, especially our
children.
Sincerely,
Calavera Hills Traffic Safety Group
Sandy Ahearn
Will and Jackie Bynagte
Teresa Curella
Dana Ebete
Sharon Edmiston
Tom Gardner
James Houghton
Shauna Hurst
Christine Inocelda
Angela McCarthy
Lela Panagides
Mark NeSmith
Carmen Rene
Jim Simmonds
Carolyn Koumaras
Jennifer van Riet
Donna Ruiz
Lily Sampica
Brad Sampica
Iris Valdez
4
Addendum
https://www.consumerreports.org/car-safety/higher-speed-limits-led-to-36760-
more-deaths-study-shows/
Person 1
4, 2, 1
Person 2
1, 5, 2
Person 3
1,2,4
Person 4
1,2
Person 5
1,2,
Person 6
3,4
Person 7
1
Person 8
1,2
Person 9
1,2,4
Person 10
1,5,6
Person 11
1,2,4
Person 12
1,2,4
Person 13
6,2,1
College Blvd intersections
5/4/2020 T&MC meeting
Commissioner Linke
Tamarack
North
Tamarack
South
CVD