pages: TransportationCommission/2007-05-23.pdf, 5
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TransportationCommission | 2007-05-23 | 5 | stops. Mr. Bruzzone noted that the average speed does not include dwell time, but does include stops for traffic signals and other stops not associated with loading and unloading passengers. Commissioner Krueger noted that Exhibit 1 discussed magnetic stripe payment systems, and inquired about the comparison between Translink reader systems and the magnetic stripes. Mr. Bruzzone noted that when they work, the Translink reader systems were faster, and added that magnetic stripes were extremely slow. He noted that on Spare the Air Day, when fares were not collected, an MCI bus took 3.2 seconds per passenger to board; paying passengers increased the time to 8 seconds per passenger. Chair Knox White inquired about the percent of on-time performance (OTP) under "Line 51 Best Practices." He was surprised at how well the 51 seemed to be doing at 67.8%, and noted that as a regular rider of the line, he did not perceive that to be the case. Mr. Bruzzone noted that on-time performance consisted of being within five minutes of the scheduled time. Chair Knox White inquired whether OTP included stops at the early part of the route. Puja Sarna of AC Transit replied that it was for the full day. He inquired whether OTP was measured at some key spots such as 12th and Broadway during certain times of the day. He did not perceive that OTP figure as being representative of the performance at the key spots. He noted that he frequently hears complaining about the route in downtown Oakland. Ms. Sarna noted the OTP averaged the data from the entire day. She noted that they could make a range of OTP at the same points, and noted that during the next data collection effort, they would have traffic checkers at certain points along the route, checking to see how far apart the headways would be, as well as what the lead times would be. They could match the OTP to those same points during different times of the day. She noted that the data was skewed with the 6 - 8 a.m. data, and 10 p.m. to midnight data, which would be much more on-time than peak times. Commissioner Schatmeier noted that when he used the 51, he would ride into Oakland in mid- morning, and return to Alameda about 7:30-8:00 p.m. and found the service to be reliable at that time. He acknowledged that the traffic congestion at that time was not as bad, and crush loads were not being carried. Mr. Bruzzone noted that the measure of on-time performance was minus 1/plus 5, and that a bus on a 10-minute headway drops back five minutes, that would create a big gap. If the follower bus was up one minute, there would be only four minutes between buses, leading to bunching. They would also examine headway adherence, as well as running times. Commissioner Krueger inquired whether the fact that the line was being observed would have an impact on the on-time performance. Mr. Bruzzone noted that was a good point, but they did not observe that. He noted that performance does change with manual traffic checkers, but not with an APC unit. He noted that some traffic checkers board with tickets so they would not be apparent to the driver as a traffic checker. Transportation Commission May 23, 2007 Page 5 of 12 | TransportationCommission/2007-05-23.pdf |