Quote:
Originally Posted by haljackey
A bus bay may delay a bus an average of 5-10 seconds per stop. While these do compound it's not enough to deter usage. Frequency is what matters.
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5-10 seconds per stop adds up. And delays affect frequency.
For example, for a route with 60 minute run time in each direction, 8 buses would be required to provide 15 minute frequency. If there are 40 stops in each direction and there is a 7.5 second delay at each stop, then the total run time increases 10 minutes, resulting in frequency decline from 15 minutes to 16 minutes 15 seconds, a reduction in the capacity of the route by 8 percent, causing more overcrowding.
One bus would be needed to be added to the route to bring its frequency back up to 15 minutes, which would increase operating costs significantly, which would have to be covered with either higher fares or increased property taxes. Plus, there is the inconvience to the bus riders, who have to endure buses whose average speeds are reduced by 8 percent, buses that were already significantly slower than cars to begin with.
Keep in mind, when buses are delayed, the amount of people waiting at the next stop increases, causing the buses to be even slower. When buses are more overcrowded, they need more time to let passengers off too. So the speed/capacity reduction in this example could be even higher than 8 percent.
Bus bays, if they result in delays, could be very detrimental to bus operations, make the service less attractive, cause higher fares, and increase the burden on taxpayers. Bus bays really should be designed in such a way that do not interfere with bus operations and avoid incoveniencing riders, which I think is entirely possible. For example, a bus bay that is long enough might actually allow the bus to bypass cars waiting at a red light and reach the stop and let pessangers on/off earlier. But more often than not, it is not about buses or the riders at all, which results in problems for everyone, even the taxpayers who don't use transit.