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District of Columbia
General Knowledge #13
Practice Test
How much time is typically required for a normal tractor-trailer to cross one railway line? And what about two lines?
12 seconds for a single track and 18 seconds for a double track
6 seconds for single track and 8 seconds for double track
10 seconds for a single track and 14 seconds for a double track
14 seconds for a single track and 15 seconds for a double track
Correct: 0
Incorrect: 0
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