A broken white line has two purposes. For a channelized left turn lanes, it separates lanes traveling in the same direction. In a two-way left turn lane, it separates two southbound lanes and two northbound lanes.

High Occupancy Vehicle (HOV) lanes.

Brighton has a varying number of lanes on its roads, with some roads having two lanes in each direction and others having more or fewer lanes. The number of lanes typically depends on the size and traffic volume of the road.

The Sydney Harbour Bridge carries eight lanes of vehicular traffic. There are also two train lines, a pedestrian footpath and a cycleway. The width of the bridge is almost 49 metres.

London Bridge has three lanes of traffic in each direction. From the north bank to the south bank there are three lanes of traffic for all vehicles. From the south to the north, there are two lanes of traffic for all vehicles plus one bus lane.