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| Re: Should the city take back its buses and subways? (1507603) | |||
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Re: Should the city take back its buses and subways? |
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Posted by Stephen Bauman on Tue Mar 19 22:34:52 2019, in response to Re: Should the city take back its buses and subways?, posted by randyo on Tue Mar 19 18:48:16 2019. For a given emergency braking rate, service braking rate, acceleration rate and train length, there is speed that minimizes headways with the follower traveling at a safe distance behind the leader. (Save distance is at a speed so that application of the emergency brakes will stop the train before a collision.)The follower going faster or slower than this speed will result in greater headways. Thus, closing in on a leader at a slower speed will result in greater headways. Keying by is not the strategy to follow, to reduce headways. |
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