Bus lock

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Dutch bus lock in a Delft residential area with a warning sign.
Public bus passes a bus lock in Hillerød , North Zealand , Denmark
Active bus lock in Ravensburg

A bus lock is a section of the roadway at intersections, junctions or driveways that is secured in terms of signaling or construction by controllable or passive barriers and is reserved exclusively for regular bus service.

A distinction is made between active and passive bus locks. Active bus locks consist of a bollard or a pyramid that is lowered by electronics when a bus approaches . Active bus locks only allow public buses to pass through.

Passive bus locks consist of a section of carriageway that prevents normal cars from passing through by creating ramps, depressions or obstacles in the middle of the lane . Damage to cars can occur due to their narrow width or insufficient ground clearance when passing through. For safety reasons, passive bus locks must be announced with signs, otherwise legal problems due to damage to the car could result. In the Netherlands it is a square, blue sign showing a white car with the front wheels in a depression (see photo), in Denmark it is a white additional sign to the traffic sign " 101 - Hazardous Area ", which shows a car falling into a depression. Passive bus locks remain passable for trucks, private buses and wide off-road vehicles.

Passive and active bus locks can be a measure to calm the traffic in order to keep through traffic away from residential areas and to ensure their development by bus lines.

Signaling measures at bus stops or at the end of a bus lane within the scope of priority for local public transport are also referred to as bus locks . A second set of traffic lights is set up at a distance of at least 30 meters before a street crossing; the space in between serves to thread the city buses in front of the individual traffic.


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