Road markings are used to control and guide traffic to ensure safety. They include lines, patterns, words, symbols and reflectors on or near the roadway. There are several types of common road markings. Centre lines separate opposing traffic, while lane lines divide lanes for traffic flowing in the same direction. No overtaking zone markings indicate areas where passing is prohibited. Pavement edge lines show the edge of roads without curbs. Stop lines mark where vehicles must stop at intersections. Additional markings include pedestrian crossings, cyclist crossings, directional arrows, parking spaces, bus stops and object markings. Road markings play an important role in regulating traffic flow and maximizing safety.