Railway crossings are places where railways intersect with roads, and sometimes with urban streets and tramways, at the same level. They are equipped with signalling devices designed to provide timely warning to drivers of non-rail vehicles approaching the crossing about an oncoming train. Furthermore, the crossing signalling systems must allow for the possibility of signalling a train to stop in the event of an emergency situation at the crossing. Most accidents occur at unregulated crossings where drivers attempt to cross the railway tracks without ensuring the safety of the manoeuvre. Unfortunately, many forget that crossings are zones of increased danger, as trains travel at high speeds, and even with the driver applying all emergency braking measures, a train's braking distance can reach 1.5-2 km. Drivers, in an attempt to save a few seconds, lose their lives and endanger the lives and health of their passengers and train passengers.