Vehicles displaying a diamond-shaped sign indicating a hazardous load:

Are not allowed to drive on freeways.
Must stop before crossing railroad tracks.
Are not allowed to exceed 40 MPH.
Have the right-of-way in all intersections.
Explanation

When approaching railroad tracks, be alert for other vehicles that may be stopping before the RR crossing. The requirement to stop before railroad tracks applies to specific types of vehicles, such as school buses and trucks carrying hazardous materials.

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