Commercial Driver's License

Answer: D - When crossing railroad tracks, commercial drivers should avoid shifting gears while on the tracks. The driver may miss a gear and end up stalled on the tracks. Drivers should also make sure that traffic ahead of them has cleared the tracks. This will prevent the commercial vehicle from being trapped on the tracks should the forward traffic slow or stop unexpectedly. Steep inclines may cause a tractor or trailer to hang up. Steep inclines are more common in rural areas than in urban areas.