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HomeMy WebLinkAbout2016-03-07; Traffic Safety Commission; ; Investigate the need to establish an ALL-WAY STOP at the intersection of Buena Vista Way and Arland RoadCITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT COMMISSION MEETING OF: March 7, 2016 ITEM NO. 6E LOCATION: Intersection of Buena Vista Way and Arland Road INITIATED BY: Michelle Lin REQUESTED ACTION: Investigate the need to establish an ALL-WAY STOP at the intersection of Buena Vista Way and Arland Road. BACKGROUND: DATA: The subject intersection is located in the northwest quadrant of the city close to City Hall (see Exhibit 1). Due to vertical curvature on Buena Vista Way at Arland Road, sight distance to the east from Arland Road is severely restricted. The request was submitted by a resident of Carlsbad who expressed concerns about turning from Arland Road due to limited sight distance to the east. Buena Vista Way and Arland Road are classified as local/neighborhood streets in the Mobility Element of the General Plan. Buena Vista Way features curb, gutter, and sidewalk on the north side between Highland Drive and James Drive. On the south side, there is an asphalt berm and dirt shoulder. It has a pavement width of approximately 29 feet and 6 inches with a single travel lane in each direction. There is a painted double yellow centerline, and the speed limit is 25 miles per hour. Arland Road features curb, gutter, and sidewalk on the west side and is unimproved on the east side. It has a pavement width of 29 feet and is not striped. The posted speed limit is 25 miles per hour. There is a street light on the northeast corner of the intersection, and there are no parking restrictions near the intersection. Single family residences are located near the subject intersection. As part of this request, staff conducted an analysis to evaluate whether ALL-WAY STOP control is appropriate 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 minimum traffic volumes, collision history, vehicle/pedestrian conflicts, sight distance restrictions, and other criteria to determine whether or not an ALL-WAY STOP is justified at a particular intersection. It is also based on the intersection design criteria contained in the Caltrans Highway Design Manual. Page 1 COMMISSION MEETING OF: (continued) CITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT March 7, 2016 ITEM NO. 6E Staff conducted field measurements of the existing sight distance conditions at the subject intersection. At unsignalized public road intersections, the Caltrans Highway Design Manual states that corner sight distance should be provided. For a 25 mile-per- hour roadway, corner sight distance is 275 feet and stopping sight distance is 150 feet. Corner sight distance allows the driver on the side street to complete their movement while the approaching vehicle travels at the speed limit of the main street. There is significant vertical curvature on Buena Vista Way east of its intersection with Arland Road, which significantly restricts sight distance of westbound vehicles for vehicles waiting to turn right or left on Arland Road. The results of the sight distance evaluation conducted by staff are shown in Table 2 and consider the minimum stopping sight distance and corner sight distance requirements for 25 miles per hour. Table 2: Sight Distance (SD} Evaluation at Buena Vista Way and Arland Road Location Measured Sight MinimumSSD MeetsSSD Minimum Corner Meets Corner SD Distance for ZS MPH for25 MPH? SD for 25 MPH for 25 MPH? Looking to the West More than 300' 150' YES 275' YES Looking to the East 174' 150' YES 275' NO Page 2 COMMISSION MEETING OF: (continued) CITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT March 7, 2016 ITEM NO.6E Figures 1 and 2 are photographs that show the sight distance conditions from Arland Road looking to the west and east, respectively. Figure 1: Sight distance from Arland Road looking to the west Figure 2: Sight distance from Arland Road looking to the east Page 3 COMMISSION MEETING OF: (continued) CITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT March 7, 2016 ITEM NO. 6E Due to the intersection meeting the sight distance criteria for ALL-WAY STOP control, traffic volumes were not collected. In the past eight years, there have been no reported collisions at the intersection of Buena Vista Way and Arland Drive. RECOMMENDATION: Based on the findings contained in this report, the Traffic Safety Coordinating Committee recommends the installation of an ALL-WAY STOP at the intersection of Buena Vista Way and Arland Road. NECESSARY CITY COUNCIL ACTION: The City Council must adopt an ordinance to establish the ALL-WAY STOP control as recommended. Page 4 C ·-'"""' _, Exhibit 1: Buena Vista Wa and Arland Road Legend o Existing stop sign • Proposed stop signs >-a f,,?, ~ J_ 1';t~ "' I ,.... _ ___,,.__ c, ,-- ( -------------,