alekr Posted August 30, 2012 Share #1 Posted August 30, 2012 When I was riding the packed 7 train I stood by the door and saw this "air tested okay" on the subway car. What is the subway "air" means? I don't really understand why it is vital to test the air? Link to comment Share on other sites More sharing options...
B3 Via Av U Posted August 30, 2012 Share #2 Posted August 30, 2012 I think it has to do with the air brake pipe. If there's a leak, you don't have pressure. Link to comment Share on other sites More sharing options...
FriedChikkin Posted August 31, 2012 Share #3 Posted August 31, 2012 Where on the subway car? It was just written on the door... on the wall someplace? Link to comment Share on other sites More sharing options...
alekr Posted August 31, 2012 Author Share #4 Posted August 31, 2012 it was on the car connection below the gap between cars Link to comment Share on other sites More sharing options...
Fresh Pond Posted August 31, 2012 Share #5 Posted August 31, 2012 it was on the car connection below the gap between cars The couplers... Link to comment Share on other sites More sharing options...
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