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The practice of getting one green light after another because you happen to be driving in the same direction as a train running in parallel and at more or less the same speed next to the roadway you're on. As you and the train approach a grade-level crossing, the train trips the traffic light in its favor, which then also favors drivers.
I went tripstreaming to the bank today and saved 10 minutes.
by GoodMoonRising October 19, 2010
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