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  2. Lane control lights - Wikipedia

    en.wikipedia.org/wiki/Lane_control_lights

    Lane control signals around the world follow their own universal pattern, as specified in the Vienna Convention on Road Signs and Signals. [1]: Art.23, ¶11 Typical signals include a green downward arrow, used to indicate a lane which is open to traffic facing the signal, a red cross, which indicates a lane is either reserved for opposing traffic or closed to traffic in both directions, and a ...

  3. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    Variable lane control is a form of intelligent transportation systems which involve the use of lane-use control signals, typically on a gantry above a carriageway. These lights are used in tidal flow systems to allow or forbid traffic to use one or more of the available lanes by the use of green lights or arrows (to permit) or by red lights or ...

  4. Traffic light control and coordination - Wikipedia

    en.wikipedia.org/wiki/Traffic_light_control_and...

    The normal function of traffic lights requires more than sight control and coordination to ensure that traffic and pedestrians move as smoothly, and safely as possible. A variety of different control systems are used to accomplish this, ranging from simple clockwork mechanisms to sophisticated computerized control and coordination systems that ...

  5. Lane - Wikipedia

    en.wikipedia.org/wiki/Lane

    A climbing lane, crawler lane (UK [6]), or truck lane, is an additional roadway lane that allows heavy or underpowered vehicles to ascend a steep grade without slowing other traffic. They are typically used by large trucks or semi-trailer trucks , which go uphill more slowly than they travel on level ground.

  6. Managed lane - Wikipedia

    en.wikipedia.org/wiki/Managed_lane

    A managed lane is a type of highway lane that is operated with a management scheme, such as lane use restrictions or variable tolling, to optimize traffic flow, vehicle throughput, or both. Definitions and goals vary among transport agencies, but managed lanes are generally implemented to achieve an improved operational condition on a highway ...

  7. Controlled-access highway - Wikipedia

    en.wikipedia.org/wiki/Controlled-access_highway

    The median-side travel lane of the old two-way corridor becomes a passing lane. Other techniques involve building a new carriageway on the side of a divided highway that has a lot of private access on one side and sometimes has long driveways on the other side since an easement for widening comes into place, especially in rural areas.

  8. Road traffic control - Wikipedia

    en.wikipedia.org/wiki/Road_traffic_control

    Road Traffic control is an outdoors occupation, night or day for long hours in all weathers, and is considered a dangerous occupation due to the high risk of being struck by passing vehicles.

  9. Active traffic management - Wikipedia

    en.wikipedia.org/wiki/Active_traffic_management

    The gantries over the M42 motorway in the United Kingdom show the variable speed limit in operation.. Active traffic management (also managed lanes, smart lanes, managed/smart motorways) is a method of increasing peak capacity and smoothing traffic flows on busy major highways.