The first round of Transit Delay Hot Spots were adopted by the SFMTA Board in February 2020, based on travel time data from 2019.
Map of 2020 Transit Delay Hot Spot locations
Completed improvements:
- 37 Corbett: Church Street/Market Street to 14th Street/Church Street (implemented 2022)
- The 37 Corbett served stops on both the near side and far side of the intersection at Church and Market Streets. By no longer serving the near side stop at Church/Market Street, the 37 Corbett is now able to reduce the amount of signal delay it encounters when crossing Market Street onto 14th Street.
- 44 O’Shaughnessy: Woodside Avenue/Portola Drive to O'Shaughnessy Boulevard/Portola Drive (implemented 2022)
- On this segment, the 44 O’Shaughnessy had stops on both the near side and far side of the same intersection. We removed the near side stop to reduce the amount of signal delay for buses crossing Portola Drive onto O’Shaughnessy Boulevard. This also allows for the bus to have a longer green light by installing Transit Signal Priority.
- 54 Felton: 3rd Street/Van Dyke Avenue/Lane Street to Williams Avenue/3rd Street (implemented 2022)
- On this segment, the 54 Felton stopped on both sides of the same intersection. By removing the stop at 3rd/Van Dyke/Lane Street, the 54 Felton is now able to reduce the amount of signal delay it encounters when crossing 3rd Street. This reduced travel time for 54 Felton customers by about 1 minute, or 50% in this segment.
- 27 Bryant: Cyril Magnin Street/5th Street/Market to 5th/Mission Street (implemented 2021)
- The 27 Bryant faced heavy traffic congestion on 5th Street. The 27 Bryant was rerouted to take advantage of new transit lanes on 7th and 8th streets.
- 44 O’Shaughnessy: Silver Avenue/San Bruno Avenue to Silver Avenue/Bayshore Boulevard
- The 44 O’Shaughnessy moves slowly on Silver Avenue between San Bruno Avenue and Bayshore Boulevard due to traffic congestion, double parking and limited curb space. The planned improvements include a bus zone extension, additional commercial loading zones, and a relocated short term parking zone to allow for the bus to more easily serve riders and move through the intersection.
- 8AX and 8BX Bayshore “A”/“B” Expresses: Kearny Street/Sutter Street to Kearny Street/Bush Street (implemented 2020)
- The 8 and 8AX/8BX encountered signal delay through this segment. In January 2020, signal retiming on Kearny Street eased delay on this segment. In the future, stop realignments are proposed along Kearny Street to further improve travel times on the 8 Bayshore and 8AX/8BX Bayshore Expresses.
- 19 Polk: Larkin Street/O'Farrell Street to Geary Street/Larkin Street
- On this segment, the 19 Polk must cross multiple lanes of traffic to merge and turn left at Geary Boulevard. The proposed improvement would convert the right lane into right turn only (except Muni) between Ellis and O’Farrell Streets, serving as a short transit lane or “queue jump” to help the 19 Polk get ahead of other vehicles to merge over to the left at O’Farrell Street.
- 1BX, 31AX/BX, 38AX/BX express lines: Bush Street/Sansome Street to Sansome Street/Pine Street
- In heavy traffic, buses must cross multiple lanes to move from the mid-block stop on Bush to the left turn lane at Sansome. In August 2024, the stop on Bush was relocated to the far side of Montgomery to give the bus more space to change lanes.
On hold:
- 30X Marina Express: Pine Street/Front Street to Pine Street/Battery Street
- This route no longer operates in the afternoon peak.
- 24 Divisadero: Cortland Avenue and 30th Street/Mission Street
- No feasible project was identified due to the complexity of this area, which also serves several other Muni routes (14 Mission, 14R Mission Rapid and 49 Van Ness-Mission) that could be negatively impacted by any adjustments to the 24 Divisadero at this location.