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Home My WebLink AboutCUP 191; Sun Faire; Conditional Use Permit (CUP) (7)4 I - Webb Pwb Qwd Aaewitda I TRAFFIC a TRANSPORTATION ENGINEERING December 29, 1980 Mr. Peter Meisen P.O. Box 453 Cardiff, California 92007 RECEIVED CITY OF CARLSBAD PIannlng Department Dear Mr. Meisen: This letter summarizes our review of the traffic factors and related impacts of your proposed Sun Faire Festival at the Carlsbad Raceway. The study has been based upon information provided by you, the City Staff and available reference data. PROJECT DESCRIPTION The project consists of the use of the existing Carlsbad Raceway faci.Lities for a international festival or fair. Plans for the fair are for a Thursday through Sunday schedule with the gates opened between 10 AM and 6 PM. will be from Palomar Airport Road at thc existing Raceway cnt.rance westerly of Linda Vista Road. The festival is to operate during the summer months of May through October. Access to the site EXISTING CONDITIONS Palomar Ariport Road adjacent to the site is a two lane facility with an average daily traffic volume of 13,000 vehicles''). The intersection of Palomar Airport Road and El Camino Real is controlled by a four-way STOP. Palomar Airport Road is connected to the San Diego Freeway (1-5) by a diamond type interchange. Easterly of the site, Palomar Airport Road extends into San Marcos with some sections widened to provide four lanes and turn channelization. 1 (1) "Draft Environmental Impact Report, San Diequito Circulation Element, GPA 80-CE," County of San Diego, July, 1980. 2651 EAST CHAPMAN AVENUE * SUITE 110 FULLERTON, CALIFORNIA 92631 (714) 871-2937 - ~ -2- TRIP GENERATION AND ASSIGNMENT Due to the uniqueness of the project, there is a limited amount of data available to project trip generation. Studies by our firm of the Orange County Fair indicated a range of 2.6 to 3.5 persons per vehicle. Similar studies at the Universal Amphitheater indicated an average of 2.6 persons pcr vehiclc. On the biirrls of these studies, a rate of 2.6 persons per vehicle has been utilized for this project. Information provided by you, indicates a projected daily attendance of 2,000 to 3,000 persons. trip ends (1150 in and 1150 out). The total trip ends for a 3,000 attendance day would be 2,300 In order to assign the project traffic to the road system, it is necessary to determine a geographic trip distribution pattern. Based upon population distribu- tions, previous studies and our knowledge of the area, a trip distribution pattern was developed and is illustrated in Figure 1. estimated trip generation, daily project traffic at selected locations on the road system were obtained. These daily project traffic volumes are also indicated on Figure 1. By applying these percentages to the ANALY s IS The principal concern related to this project with respect to traffic is the ability of the existing road system to accommodate the project traffic. previously, the current daily traffic on Palomar Airport Road is 13,000 vehicles. With the project, the total would increase to approximately 15,000 which is near the capacity for this type of facility. which are general in nature and peak conditions are better indicators of actual conditions. As was etnted These are daily volume/capacity comparisons No data are available relative to peak hour trip generation rates for events of this type. opening time with outbound traffic being dispersed over a longer period of time. Activities such as sporting events and concerts have been found to have 80 percent of the total trips arrive in the hour preceeding the event. (2) Since the festival would not have a precise starting time similar to a sporting event or concert, the General observations of similar events indicates a heavy inbound flow near (2) "Traffic Considerations for Special Events," Institute of Transportation Engineers, 1976. e 5% 20% 230 jir] I3O 230 92 0 \ 2\ PALOMAR 805 /I 740 [645) '5 \\ 3\75 75 %\ 50% 20% LEGEND 20% - TRIP DISTRIBUTION 230 - DAILY PROJECT TRAFFIC 11851 - PEAK INBOUND FLOW TRIP DISTRIBUTION AND DAILY PROJECT TRAFFIC FIGURE 1 .- - 3- peak arrival period could be assumed to be more dispersed; howwt'r, for ii worst case condition, we have assumed an 80 percent factor. The peak inbound volumes would be 740 on Palomar Airport Road from the west with 4W of these utilizing the northbound off-ramp from the San Diego Freeway. peak inbound volumes are indicated on Figure 1. of the peak, the time of occurrence is critical. The festival is planned to open at 10 AM which would hdicatea peak inbound flow between 9 and 10 AM. This is a relatively light traffic period since work trips are generally off the roads and shopping and other trips have not begun. with consideration for time of occurrance indicates a potential problem at the El Camino Real/Palomar Airport Road intersection and at the entrance to the site. It is recommended that provisions be made for Police traffic control at these two locations until actual conditions indicate the need for this additional control is not required. These 111 addition to the magnitude Review of the peak hour volume projects Based upon the assumptions discussed above, it is not anticipated that exiting traffic will require special provisions or control. volumes at the Palomar Airport Road/San Diego Freeway do not indicate any potential problems. In addition, the projected The estimated vehicle occupancy ratio of 2.6 persons per vehicle would indicate the need for 1150 parking spaces on-site. parking facilities to cover peak attendance days. Provisions should be made for additional It is recommended that data be collected during the operation of the festival to provide a basis for revised analyses. ratios, entering and exiting volumes by time of day, and approach routes. Represent- ative days should be selected to obtain these data. Home address zip codes would be useful in determining approach routes. These data should include vehicle occupancy The study has examined the traffic factors and potential impacts of the proposed Sum Faire Festival at the Carlsbad Raceway. existing road system would be adequate to accommodate the projected traffic. condition is based upon the data and assumptions described in the report. tions have been made to reduce potential impacts and to provide data for future events. In general, it was found that the This Recommenda- -4- Principal findings of the study are the following: 1. 2. For a worst case condition, 920 vehicles would enter during the peak hour. 3. An event with 3,000 attendees would generate 2,300 daily trip ends. Exiting traffic would be dispersed over a period of time to reduce potential impacts. The existing road system can accommodate the project traffic with the recommended mitigation measures. For an event with 3,000 attendees, parking for 1,150 vehicles would be required. 4. 5. MITIGATION MEASURES The following measures are recommended to mitigate potential impacts and provide data for future event planning. 1. Police traffic control should be provided at El Camino Real and Palomar ‘Airport Road and at the entrance until conditions indicate it is not required. 2. Traffic data should be collected during the festival to provide base data for future events. * * * * * * * * We trust that this report will be of assistance to you and the City of Carlsbad. If you have any questions or require additional information, please contact us. Respectfully submitted, WESTON PRINGLE AND ASSOCIATES ? // Weston S. Pringle, P.E. 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