Cross only when it is safe. The same rules apply to trolley crossings as to train crossings. Do not proceed across the tracks until you can see clearly in both directions and are sure that no other trolley or train is coming. Do not go around or under any closed gate. Trolleys are very quiet and move more quickly than freight trains.
Some loads have code numbers.
CHP or fire department officers know what to do if the load is accidentally spilled. Vehicles which display these signs, must stop before crossing railroad tracks.