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Home My WebLink About2013-06-03; Traffic Safety Commission; ; Investigate the need to establish ALL-WAY STOP control at Laguna Drive and Roosevelt Street/Buena Vista CircleCITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT COMMISSION MEETING OF: June 3, 2013 ITEM NO. 6B LOCATION: Intersection of Laguna Drive and Roosevelt Street/Buena Vista Circle INITIATED BY: Monica Wilkerson 2430 Buena Vista Circle Carlsbad, CA 92008 REQUESTED ACTION: Investigate the need to establish ALL-WAY STOP control at Laguna Drive and Roosevelt Street/Buena Vista Circle. BACKGROUND: DATA: The subject intersection serves the adjacent residential neighborhoods in the northwest quadrant of the city. Due to concerns expressed by residents about restricted sight distance at the intersection and the speed of vehicles on Laguna Drive, staff recommends installation of ALL-WAY STOP control at Laguna Drive and Roosevelt Street/Buena Vista Circle. Laguna Drive, Roosevelt Street and Buena Vista Circle are unclassified in the Circulation Element of the General Plan. Laguna Drive functions as a collector street and features curb and gutter on both sides of the street. There are sidewalks on both sides of Laguna Drive between State Street and Roosevelt Street and on the north side only between Roosevelt Street and Jefferson Street. Roadway widths vary on Laguna Drive between 32 and 40 feet with a single travel lane in each direction, separated by a painted center line. Laguna Drive has a posted speed limit of 30 mile per hour and serves primarily single and multifamily residential properties. Roosevelt Street also functions as a collector street and features curb and gutter and sidewalk on both sides of the street. Roadway width is 44 feet with a single travel lane in each direction, separated by a painted center line. Roosevelt Street has a posted speed limit of 25 miles per hour and serves a mix of single and multifamily residential and commercial properties. Buena Vista Circle is a narrow, unimproved cul-de-sac that serves single family residential properties. Traffic control at the intersection is provided by a STOP and marked crosswalk across Buena Vista Circle and a STOP across Roosevelt Street. As part of this request, staff conducted an analysis to establish an ALL-WAY STOP at the subject intersection. The analysis is based on Section 2B.07 of the California Manual on Uniform Traffic Control Devices (MUTCD), which specifies the consideration of different factors to determine whether or not an ALL-WAY STOP is justified at a particular location. Our records indicate that no collisions were reported at the subject Page 1 COMMISSION MEETING OF: (continued) CITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT June 3, 2013 ITEM NO. 6B intersection during the period from 2010 through 2012. A 24-hour approach count was conducted on April 23, 2013, the results of which are shown on Table 1. Table 1: 24-Hour Traffic Count Summary at Laguna Drive and Roosevelt Street laeuna Drive Roosevelt Street/Buena Vista Wav Total Time Eastbound Westbound Subtotal Northbound Southbound Subtotal Volume 0000-0100 3 11 14 4 0 4 18 0100-0200 6 5 11 9 0 9 20 0200-0300 3 4 7 1 0 1 8 0300-0400 2 4 6 4 1 5 11 0400-0500 2 9 11 4 2 6 17 0500-0600 10 47 57 10 2 12 69 0600-0700 21 70 91 16 4 20 111 0700-0800 66 149 215 33 12 45 260 0800-0900 71 153 224 62 7 69 293 0900-1000 82 158 240 78 8 86 326 1000-1100 85 152 237 97 10 107 344 1100-1200 98 164 262 112 12 124 386 1200-1300 110 197 307 120 17 137 444 1300-1400 108 194 302 102 8 110 412 1400-1500 108 201 309 150 15 165 474 1500-1600 116 198 314 160 13 173 487 1600-1700 170 211 381 162 9 171 552 1700-1800 193 185 378 144 8 152 530 1800-1900 122 113 235 98 11 109 344 1900-2000 70 103 173 53 9 62 235 2000-2100 36 52 88 40 7 47 135 2100-2200 33 51 84 25 2 27 11 2200-2300 15 40 55 16 1 17 72 2300-2400 18 14 32 14 0 14 46 Totals 1548 2485 4033 1514 158 1672 5705 The intersection of Laguna Drive and Roosevelt Street/Buena Vista Circle did not meet the California MUTCD criteria for an ALL-WAY STOP installation based on minimum traffic volumes or collision history. However, the current Engineering and Traffic Survey for this portion of Laguna Drive (approved on 12/27 /07) indicates a higher than normal collision rate (3.13 accidents per million vehicle miles) than the corresponding statewide rate for a comparable roadway (1.81 accidents per million vehicle miles). The California MUTCD allows consideration of an ALL-WAY STOP when there are "locations where a road user, after stopping, cannot see conflicting traffic and is not able to reasonably safely negotiate the intersection unless conflicting cross traffic is also required to stop." Available sight distance at this intersection is significantly affected by parked cars. Due to the nearby commercial and multifamily land uses, parking demand is very high and parked cars near the intersection can limit sight distance. Although Page 2 COMMISSION MEETING OF: (continued) CITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT June 3, 2013 - ITEM NO. GB sight distance can be somewhat improved by the prohibition of parking, staff does not recommend parking restrictions at this time due to the high parking demand. Staff conducted a sight distance evaluation at this intersection. Recommended minimum stopping sight distance for a 30 mph roadway is 200 feet. The measured sight distance from Roosevelt Street was approximately 70 feet looking to the west (Figure 1) and approximately 130 feet looking to the east (Figure 2). The measured sight distance from Buena Vista Circle was approximately 75 feet looking to the west (Figure 3) and approximately 130 feet looking to the east (Figure 4). Based on these findings, staff believes that an ALL-WAY STOP at this intersection is appropriate. Figure 1: Sight distance {70 feet) from Roosevelt Street looking west. Page 3 COMMISSION MEETING OF: {continued) CITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT June 3, 2013 ITEM NO. 6B Figure 2: Sight distance (130 feet) from Roosevelt Street looking east. ~~· . Figure 3: Sight distance (75 feet) from Buena Vista Circle looking west. Page 4 COMMISSION MEETING OF: (continued) CITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT June 3, 2013 ITEM NO. 6B Figure 4: Sight distance (130 feet) from Buena Vista Circle looking east. The recommendation for ALL-WAY STOP control at Laguna Drive and Roosevelt Street/Buena Vista Circle is also supported by the option in the California Manual on Uniform Control Devices, which allows consideration of an ALL-WAY STOP at "an intersection of two residential neighborhood collector (through} streets of similar design and operating characteristics where multiway STOP control would improve traffic operational characteristics of the intersection." RECOMMENDATION Based on the findings contained in this report, the Traffic Safety Coordinating Committee recommends the installation of ALL-WAY STOP control at the intersection of Laguna Drive and Roosevelt Street/Buena Vista Circle. NECESSARY CITY COUNCIL ACTION: The City Council must adopt an ordinance to establish the STOP control as recommended. Pages CITY OF CARLSBAD ENGINEERING AND TRAFFIC SURVEY STREET: Laguna Drive LIMITS: State Street to Jefferson Street FACTORS A. Prevailing S11eed Data: Direction: Eastbound/Westbound Date of Speed Survey 10/31/07 Location of Speed Survey 100' West of Madison Street 85th Percentile 33MPH 10 MPH Pace 25 to 35 MPH Percent in Pace 93% Posted Sneed Limit 30MPH B. Midblock Accident Histo!l,'.: (11/01/05 through 10/31/07) Speed-Related Accidents 2 Total Accidents 4 Accidents/Million Vehicle Miles (MVM) 3.13 California Statewide Accidents/MVM 1.81 (2005 Rate for Same Type of Roadway) C. Traffic Factors: Average Daily Traffic 6,479 -West of Jefferson Street (7/24/07) Traffic Controls Stop Sign Control at State Street; Traffic Signal at Jefferson Street Pedestrian/Bicycle Traffic Moderate Pedestrian Activity Bicycle Lanes No Designated Bicycle Lanes Have Been Striped on the Roadway On-Street Parkina Parkina Allowed on Maioritv of Roadwav D. Roadway Factors: Circulation Element Street Classification Unclassified Length of Segment 0.27 Mi. Roadway Width 32 to 40 Feet (Curb-to-Curb) Number of Lanes One Lane Each Direction Vertical Alignment Roadway Grades Vary from 0.52% to 3. 7% Horizontal Alignment Relatively Straight Sidewalks Sidewalk on Entire North Side and Easterly 250 Feet of South Side Driveways Several Closely Spaced Driveways Street Liahtinn Adeauate Street Liahtinn E. Snecial Conditions: Travel lanes are seoarated bv a double-vellow centerline. F. Adiacent Land Uses: Sinale and Multi-Familv Residential, Professional/Medical Offices, Neiahborhood Park G. Remarks/Conditions Not Readily Apparent: The south side of the roadway is unimproved in one location which reduces the roadway width. Sight distance is limited at some driveways due to vertical curvature of roadway. Warning signs advise drivers of oedestrians crossinn the roadwav at Roosevelt Street. The accident rate is much hiqher than a comnarable road. H. Traffic Engineer's Recommendation (Explanation): This speed zone satisfies the conditions of Section 627 of the California Vehicle Code and has been prepared and evaluated in accordance with the California Manual on Uniform Traffic Control Devices with respect to design and prevailing speeds, accident records, pedestrian and bicyclist safety, intersection and driveway spacing, and roadside and traffic conditions not readily apparent to the driver. A speed limit posting of 30 MPH is found to be appropriate and iustified. • . . I.. -~: •. i!(ftecertificalion m eidsti1111cspeed zone. per Sections 22357,. 22358 and 40802 of the CahlOIT)ia.Vehicle Code. tl E$1;!b11$hment of new speed zone. • • ••. Approved~-~ T. ~~ g:!• I -...j -z.-U£.7_ i1y Engineer Date NOTE: Appropriate speed survey(s) Is /are attached hereto and made a part hereof. LOCATION MAP PROJECT LOCATION VICINITY MAP BUENA VISTA LAGOON BUENA PL ALL-WAY STOP CONTROL AT LAGUNA DRIVE AND ROOSEVELT STREET EXHIBIT 1 I L---------------------------------....1.------1·