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CC - Item 4C - Request for Large Botts Dots on Temple City Blvd at Olney St. /aM staf f eport TO: HONORABLE MAYOR AND MEMBERS ROSEMEAD CITY COUNCIL FROM: FRANK G. TRIPEPI, CITY MANAGER 7� 7 DATE: SEPTEMBER 28, 1999 SUBJECT: REQUEST FOR LARGE BOTTS DOTS ON TEMPLE CITY BOULEVARD AT OLNEY STREET DISCUSSION Traffic Commissioner Victor Ruiz requested staff to review the intersection of Temple City Boulevard at Olney Street. There is concern that southbound traffic on Temple City Blvd. is not following existing traffic controls, for example, traveling through the right turn only lane at Olney Street. Commissioner Ruiz inquired if the installation of large bolts dots would be a feasible solution to this traffic problem. Staff review of the accident history of this intersection has indicated no reported accidents occurring in the last three years. Traffic counts taken in 1998 indicate that approximately 17,200 vehicles travel daily on Temple City Blvd. south of Valley Blvd. Field observation of this intersection did not identify any vehicles traveling through the southbound right tum only lane to the I-10 Freeway. Figure 1 depicts the conditions at the intersection of Temple City Blvd. at Olney Street. The City's recent use of large bolts dots has been effective in restricting left turn movements into various driveways. Previously, large botts dots were installed parallel to the flow of traffic. Though the installation of large bolts dots would discourage travel through the right turn only lane, there is concern that motorists who choose to travel over or do not see the botts dots may lose control of their vehicle thereby increasing the accident potential. COUNCIL AGENDA SEP 281999 ITEM No. Ig. • 2-e-- J Rosemead City Council September 28, 1999 Page 2 of 2 After further discussion and consideration, staff recommends the installation of flexible delineators on the"island" area of Temple City Boulevard and Olney Street. These flexible delineators, similar to those once used on Mission Drive east of Rosemead Boulevard,will be visible to the motorists from a distance. The motorists can, therefore, take appropriate action to move to the appropriate lane of travel. Figure 1 depicts the installation of the flexible delineators. RECOMMENDATION It is recommended that the Rosemead City Council APPROVE the staff recommendation for the installation of flexible delineators on the island" area of Temple City Blvd. and Olney Street, as shown in Figure 1. Exhibits: Exhibit A—Staff report, dated August 17, 1999. Exhibit B—Figure 1 TO: HONORABLE CHAIRMAN AND MEMBERS ROSEMEAD TRAFFIC COMMISSSION FROM: JOANNE ITAGAKI, TRAFFIC ENGINEERING DEPUTY DATE AUGUST 17, 1999 RE: REQUEST FOR LARGE BOTTS DOTS ON TEMPLE CITY BOULEVARD AT OLNEY STREET REQUEST Traffic Commissioner Ruiz requested staff to review the intersection of Temple City Boulevard at Olney Street. Commissioner Ruiz indicated that vehicles traveling southbound on Temple City Boulevard travel through the right turn only lane at Olney Street. These vehicles appear to be unaware of the right turn only restriction or they may be attempting to "get ahead" of the traffic queue. Commissioner Ruiz inquired if large bolt's dots could be installed on the island area to discourage this movement. DATA The reported accident history at the intersection of Temple City Boulevard and Olney Street was reviewed for the period from January 1, 1996 through December 31, 1998. This review indicated no reported accidents occurring at the intersection during this three-year period. Traffic counts taken in 1998 indicate approximately 17,200 vehicles travel on Temple City Boulevard south of Valley Boulevard daily. Based on engineering judgement, the daily traffic volume on Olney Street is approximately 2,000 vehicles per day. CONDITIONS Temple City Boulevard is a 64-foot wide north/south secondary arterial roadway with two lanes in each direction. Opposing lanes of traffic are generally separated by a double yellow centerline. In the vicinity of Olney Street, Temple City Boulevard has a southbound right-turn only lane on to Olney Street with a through lane onto the 1-10 Freeway. Olney Street is a 36-foot wide east/west local roadway with a double yellow centerline in the immediate vicinity of Temple City Boulevard. Olney Street "T's" into Temple City Boulevard and is STOP controlled at the intersection. The EXHIBIT "A" Request for Large Botts Dots on Temple City Boulevard at Olney Street Page 2 eastbound (outbound) lane is restricted to a right turn only movement on to the I- 10 Freeway. Figure 1 depicts the conditions at the intersection of Temple City Boulevard at Olney Street. DISCUSSION Field observation of the intersection of Temple City Boulevard and Olney Street did not identify any vehicles traveling through the southbound right turn only lane to the 1-10 Freeway. However, staff did not observe the intersection over an extended period of time when such a movement may occur. The favorable reported accident history supports the opinion that a majority of vehicles traveling through the intersection are following the existing traffic controls. Figure 1 depicts the existing traffic controls at the intersection of Temple City Boulevard and Olney Street. There are existing signs and markings that clearly identify the restricted right turn only movement required from Temple City Boulevard onto Olney Street. Commissioner Ruii s request for the installation of large bolt's dots was carefully considered. The City's recent use of large bolt's dots has been effective in restricting left turn movements in to various driveways. The installation of large bolt's dots on the island area would reduce southbound through movements on Temple City Boulevard at Olney Street. However, staff has concern regarding the use of the bolt's dots in this instance. Previously, large bolts dots have been installed parallel to the flow of traffic with minimal chance of high-speed traffic traveling over the dots. The large bolt's dots have been placed on double yellow centerlines separating opposing lanes of traffic. Installing large bolt's dots on the island area, perpendicular to traffic flow, would discourage vehicles from traveling through the right turn only lane. However, motorists that choose to travel over or do not see the bolt's dots may loose control of their vehicles increasing the accident potential. RECOMMENDATION Based on the increased potential for traffic accidents, the installation of large bolt's dots is not recommended. Attachments Rsd\Temple City at Olney 09/21/99 10: 25 FAX 6952120 WILLDAN ASSOC »»» ROSEMEAD @002 (r) s' W ,__ f--` `/ NOT Tr, SCALE J O Inoizll C149� I, Type F 01 3.TYP tL 19 Al MEDIAkI ISLAND TEMPLE CITY BLVD FIGU2.E 1 EXHIBIT "B"