When actually crossing the tracks after stopping, what is the correct technique, including at a crossing with multiple tracks?

AAMVA CDL Manual Section 10.4.3, p. 10-9; 49 CFR Part 380, Appendix D, Unit D1.6 (Railroad-Highway Grade Crossings)

Changing gears or stopping partway across a multi-track crossing is exactly how a bus full of children can end up stalled on the tracks. Clearing every track before starting, then crossing in one steady low gear, removes the moments where the bus could stall mid-crossing.