UPDATE: Delay at Ferry Portal is clearing OB #NJudah and #TThird resuming service into the subway. https://t.co/YS1lSudd2P (More: 15 in last 24hrs)

Percentage of transit trips with bunching or gaps

Wednesday, August 22, 2018

Reset to default view
Export image
Download displayed data in excel format
Download complete/accessible data for this metric

Objective Objective 2.2: Improve transit performance
Metric Percentage of transit trips with bunching or gaps on Rapid Network
Purpose To maintain and improve service reliability by tracking on time performance and headway adherence.
Definition The percentage of observed time point arrivals on the Rapid Network with spacing of less than two minutes (one minute for scheduled headways of less than five minutes) or gaps of greater than 5 minutes beyond their scheduled headway (time between vehicles) times. The Rapid Network includes the 5R-Fulton Rapid, 7R-Haight/Noriega Rapid, 9R-San Bruno Rapid, 14R-Mission Rapid, 28R-19th Avenue Rapid, 38R-Geary Rapid, J-Church, KT-Ingleside/Third Street, L-Taraval, M-Ocean View and N-Judah lines.
Methodology Time point arrival data from the NextBus system are used to compare actual vs. scheduled headways (time between vehicles). A bunch occurs if a vehicle arrives less than two minutes after a preceding vehicle, or less than one minute for routes with vehicles scheduled to arrive every 5 minutes or less. A gap occurs if a vehicle arrives 5 minutes later than the scheduled headway.
Target Reduce bunching and gaps by 25% (FY14), 45% (FY16), and 65% (FY18) from FY12 baseline.
Reporting Frequency Monthly

For questions, comments and accessibility issues, please contact the Performance Team at performance@sfmta.com.

Notes Due to a NextBus/schedule data syncing issue, results are not available for 6/21/2014-6/30/2014; June 2014 averages reflect data from 6/1/2014-6/20/2014 only. Reported results are subject to change as data quality improves or new data become available.