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jketch

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  1. 24 hour transit service makes maintenance of tracks MUCH more difficult. New York can manage it because many lines were built as express lines, so they are quad-tracked. This means they can do maintenance on two lines at night while the other two remain open. Even 21 hours makes maintenance really tough as it essentially forces people to work three hour shifts which is quite inefficient.

     

    EDIT: Also, train service doesn't have much advantage over bus service late at night as traffic is essentially zero.

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  2. BRT is okay in only two situations

     

    1. Not a high demand

    2. No bridges, tunnels during construction, as these are expensive regardless of if you build LRT or BRT

     

    If one of the two above is not true, BRT isn't worth it. If #1 is not true, BRT is simply inefficient. I've seen it for myself twice, in Bogota and Istanbul. The buses are full, they hold only so many people, many people get left out waiting for the next one. Once demand is at that level, rail is much more efficient because of the number of cars you can hook on to each other and the speed of deceleration and acceleration (assuming grade seperation).

     

    The systems have enormous ridership in Bogota and Istanbul though. The Istanbul Metrobus line has a daily ridership of 800,000 equal to that of the entire Washington Metro system on just a single line. A system like that is going to be crowded whether you put people on trains or buses. TransMilenio in Bogota has the same issue. It has a daily ridership of 1.6 million people with only 54 miles of bus lines. For comparison the New York Subway carries 5.4 million people per day on 209 miles of routes, so the Bogota system actually manages to carry more people per length of route than the New York system does. There's no way any system in Houston would even begin to approach the ridership numbers for either of these systems, at least it grew to cover the entire city with thousands of miles of routes.

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