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Commercial Double Parking on a Congested Street

Commercial Double Parking on a Congested Street. Implications for Transit Operations in San Francisco Kristen Carnarius Graduate Student, UC Berkeley June 25, 2012. Source: Artico2 using a Creative Commons license. But, buses are slow Average speed, local bus is 6 mph

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Commercial Double Parking on a Congested Street

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  1. Commercial Double Parking on a Congested Street Implications for Transit Operations in San Francisco Kristen Carnarius Graduate Student, UC Berkeley June 25, 2012

  2. Source: Artico2 using a Creative Commons license

  3. But, buses are slow • Average speed, local bus is 6 mph • Average speed, limited bus is 10 mph

  4. Experiment Design

  5. Summary Statistics • Variable of interest = Speed • Each observation is speed over 4 blocks • N = 473 • N (limited) = 139 • N (local) = 334 • DP = # blocks double parked vehicles >=1

  6. Distribution of Speed – Local Buses DP variable 0 1 2 3 Density Speed (mph)

  7. Distribution of Speed – Local Buses DP variable 0 1 2 3 Density Speed (mph)

  8. Distribution of Speed – Local Buses DP variable 0 1 2 3 Density Speed (mph)

  9. Model Formula Speed = constant + beta1*(number of blocks double parking >= 1) + beta2*(limited bus or local bus) + beta3*(GPS point location in First Block) + beta4*(GPS point location in Last Block) + beta5*(occurrence of construction)

  10. Model Formula Speed = constant + beta1*(number of blocks double parking >= 1) + beta2*(limited bus or local bus) + beta3*(GPS point location in First Block) + beta4*(GPS point location in Last Block) + beta5*(occurrence of construction)

  11. Model Results *** <1% ** <5% * <10%

  12. Model Results *** <1% ** <5% * <10%

  13. Conclusions • Reliability and safety • More nuanced approach needed • Recognition of complexity in bus travel

  14. Double parking, tip of the travel time ice berg? Contact: Kristen Carnarius kcarnarius@gmail.com

  15. Mission Street Cross Section Source: SFMTA

  16. Mission District, San Francisco • 3 routes • 14 Mission • 14L Mission Limited • 49 Van Ness • Combined Frequency • 3 minutes • Daily Ridership • 70,000 passengers* *includes peak period express bus riders 49 Source: SFMTA

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