developing your smart driving skills 36 Railway signs Signals Lane control signals Do not drive in this lane  Move out of this lane and into a  lane with a green arrow. If the lane  control signals over all of the lanes  are flashing yellow, slow down and  proceed with caution Drive in this lane Railway crossing on  side road ahead — be prepared to stop Railway crossing — stop,  then proceed when it is  safe Railway crossing — stay stopped until the gate is fully raised  Railway crossing ahead  — be prepared to stop  Public railway and highway crossings are indicated with signs or pavement markings and may  also have mechanical or electrical warning devices for your protection. Watch for them and  remember you must always yield to trains. Lighted signals are a way of controlling traffic flow. Lane control signals are placed over lanes to indicate which ones are open for driving.