wdr@security.UUCP (William D Ricker) (06/21/83)
For those of you interested in engineering studies and computer
simulations in the area under discussion, I can refer you to a
former employer of mine:
US DOT Transportation Systems Center,
50 Broadway, Kendall SQ., Cambridge MA
One study they did involved placing a recording inertial sensor
upon a subway train and recording its motion. They integrated
this empirical data with computer queueing models of the subway
system. They would perturb the running model creating a breakdown
that takes say 20 minutes to repair, at rush hour, with 100 people
per minute arriving at each down town station to head to the
suburban stations. They model would then show how long each train
would have to spend extra at each station due to the increased
number of passengers to load, increased crowding making exit more
difficult, etc.
The reports of this and similar projects for buses and freeways
should be available from US DOT or NTIS, the National Technical
Information service, run by Dept.ofCommerce. A catalog should
be available at cost from your friendly national government,
development paid by your tax dollars.
Bill Ricker
(617)271-3725 MS k203, The MITRE Corporation, Bedford, MA, 01730
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