Traffic is backed up beyond a railroad crossing. When may you begin crossing the tracks?
Correct answer: B – When enough space exists for the entire vehicle beyond the tracks
Do not enter a railroad crossing unless there is sufficient space beyond it for your entire vehicle. Traffic may stop unexpectedly after you begin crossing, leaving part of the vehicle on the tracks. Wait before the crossing until the available space is large enough to clear every track completely.
Source: Massachusetts Driver’s Manual — Ch. 4, “Railroad Crossings”


