- May 25, 2006
- Reaction score
I get what the author is saying but I question whether the 12,000/hr metric is an effective way to measure efficiency. From what I'm reading, it's a metric to measure how many people can ride the LRT in a given hour which is most likely calculated from the number of trips per hour times the capacity of each train.I remain unconvinced on capacity. Here's a good post by Ari on the capacity of BRT. Take particular note of the references to Metro Orange Line in LA since it would be a pretty good analogue to the type of BRT we could put on Comm Ave, and keep in mind that the Metro Orange Line has ridership well below that of of the B-Line.
That's great an all but if it takes passengers over an hour to reach their destination when it should take 30 minutes, then capacity means nothing. A better metric is to measure the number of passengers transported to their destination bucketed into different trip duration (within 5 minutes, 10 minutes, 30 minutes, 45 minutes, 1 hr+) and then break it down into percentages. The distribution curve for a LRT like the B line would most likely be skewed towards the longer duration buckets (because of the train's slow speed) while the distribution curve for a BRT would probably be skewed towards the shorter duration and will remain there unless the BRT is unable to pick up everyone, at which point it will shift to the longer duration buckets.
And by the way, the analysis was done measuring the number of green line trains for all four lines. The capacity is significantly lower than the study when focusing on just the B line.