Wednesday, January 20, 2010

ULTra PRT's Headway Hokum

The ULtra website makes this claim:

"ULTra has a passenger-carrying capacity as great as LRT at 4800 seats per hour one-way at a 3 second headway.”

From a presentation at a January 12, 2008 ATRA conference:

Note: Slide #10 of the presentation mentions a shuttle application with a "5 second minimum headway". This only refers to the headway along the guideway. The small end-of-line stations shown in the shuttle graphic on slide #11 could not operate with headways below about 15 seconds. This is because all vehicles have to reverse direction at a single point within the station, and furthermore the limited number of berths would not give time to deboard and board passengers A larger station with more berths and multiple turn-around locations would be needed to process a vehicle every five seconds.

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