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					Transit Signal Priority
For the

San Pablo Rapid Bus

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Prepared by AC Transit Service Development

Summary
• San Pablo Rapid Bus Overview • East Bay SMART Corridors Overview • TSP Implementation

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Prepared by AC Transit Service Development

San Pablo Corridor Characteristics
• Located in East Bay of SF Bay Area • 14-mile long corridor • Half of route on state highway • Runs parallel to I-80 • Includes 7 cities in 2 counties • Significant congestion at some segments

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Prepared by AC Transit Service Development

Current Transit Conditions
• Serves 15,000 passengers daily • Limited and local service • Bus stops every 800 ft on average • Serves Downtown Oakland, major shopping centers, a hospital, a local college, BART train stations, and other attractors
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Line 72 R - San Pablo Rapid Bus
• Headway based schedule, 12-minute headways • Stops one-half to two-thirds of a mile apart, on average • As many stops far side as possible • Traffic signal coordination, transit signal priority, queue jump lanes • Recognizable shelters, with Rapid branding and bus arrival information signs • Recognizable vehicles, with Rapid branding and features which reduce dwell time.

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Rapid Bus Funding • Contra Costa Transportation Authority ($1 mil.) • Alameda Congestion Management Agency ($3 mil.) • FTA Earmark ($0.5 mil.)

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Line 72R - SAN PABLO RAPID BUS Implemented June 30, 2003

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East Bay SMART Corridors Program
October 1, 2003

East Bay SMART Corridors Program Description • A multimodal program to increase the efficiency & safety along the I-80 and I-880 corridors • The focus of the program is on the arterials, not the freeways • The program is a partnership of 25 federal, regional, and local agencies • Alameda County Congestion Management Agency (ACCMA) is the lead agency for planning, design, construction and maintenance and management of the system • Each local agency is responsible for operations under a unified Operations and Management Plan
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Program Participants
 Planning Agencies
 Alameda County Congestion Management Agency (ACCMA)  Contra Costa Transportation Authority (CCTA)  West Contra Costa Transportation Advisory Committee  Metropolitan Transportation Commission (MTC)

 Local Agencies
 City of Albany  City of Berkeley  City of El Cerrito  City of Emeryville  City of Hayward  City of Hercules  City of Pinole  City of Richmond  City of Oakland  City of San Leandro  City of San Pablo  City of Union City  Alameda County  Contra Costa County

 Federal Agencies
 Federal Highway Administration (FHWA)  Federal Transit Administration (FTA)

 State Agencies
 California Department of Transportation (Caltrans)  California Highway Patrol (CHP)

 Transit Agencies
 AC Transit  Western Contra Costa Transit Authority (WestCAT)  Union City Transit
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SMART Corridor Goals • Collect real time information about corridor conditions and disseminate to the transportation managers and to the public • Create monitoring capabilities along the corridor for the transportation agencies • Exchange information between the agencies • Improve coordination between the agencies • Improve transit service in the corridors
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I-80 - San Pablo Ave Corridor

• 20 miles segment
– Approx. 100 signals

• Average Daily Traffic
– San Pablo: 20,000 to 45,000 – I-80:150,000 to 260,000

• Over 10 major connectors to I-80

I-880 Corridor
• 18 miles arterial roadways
– – – – – – International Blvd East 14th Hesperian Blvd Union City Blvd San Leandro St./Blvd Approx. 120 signals

• Average Daily Traffic
– Arterials: 15,000 to 50,000 – I-880: 120,000 to 200,000

• Over 15 major connectors to I-880

Agreements and Management
• Two Memorandum of Understanding
– San Pablo and I-880 Corridors

• Cooperative Agreement for Construction
– 15 Agreements to delegated authority for construction to ACCMA

• Operations & Management Agreement
– One unified agreement for system management and operations

• Four Subcommittees oversee the program management and operations
– – – – Transit and Traveler Information Operations (Oversight for TSP) Maintenance Incident Management
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TSP Implementation
• Route 72R - San Pablo Rapid
– San Pablo Avenue from Contra Costa College to 20th Street – 62 intersections (completed) – Broadway Avenue from 20th to 3rd – 16 intersections (final design phase) – Total of 78 intersections – 14 miles

• Only 72R buses have TSP capability
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TSP Strategy • Transit Priority is based on a headway system
– If the bus is behind the preestablished headway, the request is granted – If the bus is ahead of the pre-established headway, the request is denied – The headway is independent of travel direction

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Prepared by AC Transit Service Development

TSP Parameters • Time of Day Plan – Currently set between 6 AM to 9 PM, Monday to Friday • Headway parameter – Currently set at 10 minutes • Once a priority request is received, the firmware starts a timer
– If the next request is received after the headway time, the request is granted; otherwise, the request is denied – The request is independent of direction – Only Phases 2 and 6 are currently programmed

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TSP Options

• Transit Priority is granted using either:
– Early Green – Green Extension – Currently set at 10% of cycle length or 10 seconds, based on typical cycle lengths of 90 to 100 seconds

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TSP Hardware

• Optical Detectors • Priority Request
– High Priority – Emergency Vehicles – Low Priority – Transit Signal Priority

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TSP Hardware and Firmware
• Detection is based on Optical Detection – “Opticom”
– Detection zone is set at 300 feet from the intersection – Based on 10 seconds arrival time to the intersection

• Logic is performed locally at the controller level
– Type 170 controller with Caltrans C-8 firmware – Type 170 controller with BI Trans 233 firmware

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TSP Functional Specifications

• Transit priority operates for pre-timed, semiactuated, and fully actuated intersections. • Transit priority functions in free running and coordinated modes. • Transit priority sequence operates by ending an opposing phase early to give an early green or extending the green interval with the transit priority call. • Vehicle and pedestrian phases are not be skipped to serve an opposing transit priority call.

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Prepared by AC Transit Service Development

TSP Functional Specifications (cont.) • Transit priority calls are non-locking. Transit priority sequence terminates in the absence of a call. • After serving a transit priority call, traffic signal returns to normal operation within the next cycle, under coordination mode. • The controller recognizes and begins the transit priority sequence, if all conditions are satisfied, in about 2 seconds after receiving a valid transit priority call. • Transit priority calls are served on a first come first served basis.
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TSP Functional Specifications (cont.) • Transit priority is turned on and off through a lookup table. This lookup table includes time-ofday and day-of-week parameters. • There are four (4) user settable headway time intervals selectable through a time-of-day and dayof-week table. The User will have the ability to select different headways, based on Time of Day. • There are four (4) independently tracked transit priority approaches with independent timers and setup parameters.

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Prepared by AC Transit Service Development

Results
• Initial evaluation has shown that TSP combined with other Rapid Bus components has resulted in 18% reduction in total travel time and increased ridership of 22%. • An after study will be conducted later in the year • General perception has been that transit vehicles have a better progression along the corridor, with little or no impacts on side streets • Continuing to fine-tune the system

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Prepared by AC Transit Service Development

Future TSP East 14th/International Blvd

• Route 82 (Future 82R)
– Hesperian to Broadmoor – 14 intersections In construction) – Broadmoor to 14th – 21 intersections (future addition -grant funds are secured) – Total of 35 intersections – 9.1 miles

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Prepared by AC Transit Service Development

Final Notes
•East Bay SMART Corridor Program is instrumental in resolving institutional barriers and ongoing implementation of TSP

•TSP provides an incremental operational improvement and is an integral part of AC Transit’s Rapid Bus implementation
•Far side stops •Install TSP at all intersections - Less likely to have impact on minor intersections

•Headway based TSP (no in between timepoints) results in simpler TSP implementation •Opticom system serves both Emergency Vehicles & Transit Vehicles

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Prepared by AC Transit Service Development

Additional Information and Contacts
• AC Transit Cesar Pujol, Traffic Engineer (510) 891-4839 cpujol@actransit.org • Alameda County CMA Cyrus Minoofar, Principal Engineer (510) 836-2560 cminoofar@accma.ca.gov

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