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  2. Signal timing - Wikipedia

    en.wikipedia.org/wiki/Signal_timing

    Yellow Clearance determines the yellow time for the associated movement. Red Clearance determines the all-red time for the associated movement. Walk time provides the length of the walk indication. Flashing Don't Walk is the duration of the flashing pedestrian clearance. This is timed as the length of the crosswalk divided by a speed of 3.5 ...

  3. Traffic light control and coordination - Wikipedia

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

    Part-time operation: Some traffic lights will not operate at night or when traffic is very light. Some may only operate at particular set times (e.g. during working hours of a major factory) or only during special events such as sports or exhibitions.

  4. Commuting to work in the US: facts and statistics - AOL

    www.aol.com/finance/commuting-us-facts...

    South Dakotans have the shortest commute, with an average time of 17.4 minutes. In the table below, you can see the average drive time to work in all 50 states, Washington, D.C. and Puerto Rico. State

  5. Traffic flow - Wikipedia

    en.wikipedia.org/wiki/Traffic_flow

    In transportation engineering, traffic flow is the study of interactions between travellers (including pedestrians, cyclists, drivers, and their vehicles) and infrastructure (including highways, signage, and traffic control devices), with the aim of understanding and developing an optimal transport network with efficient movement of traffic and minimal traffic congestion problems.

  6. Tired of red lights on Hilton Head? $3M traffic light system ...

    www.aol.com/tired-red-lights-hilton-head...

    For the 14,800 people who commute to Hilton Head for work, 8,500 daily visitors and 37,660 full-time residents the new impact-fee-funded light system is a transitional improvement until the town ...

  7. Ramp meter - Wikipedia

    en.wikipedia.org/wiki/Ramp_meter

    Metered ramp on I-894 in the Milwaukee area. A Portland, Oregon ramp meter. A ramp meter, ramp signal, or metering light is a device, usually a basic traffic light or a two-section signal light (red and green only, no yellow) together with a signal controller, that regulates the flow of traffic entering freeways according to current traffic conditions.

  8. Traffic optimization - Wikipedia

    en.wikipedia.org/wiki/Traffic_optimization

    The above method is primitive real-time signal optimization at best. This method will optimize one traffic signal at a time. However, in the real world, a motorist's commute involves driving through multiple signals. Thus, multiple traffic signals need to be collectively synchronized in order to be effective.

  9. Intersection capacity utilization - Wikipedia

    en.wikipedia.org/wiki/Intersection_Capacity...

    The data needs to include volumes, number of lanes, saturated flow rates, signal timings, reference cycle length, and lost time for an intersection. The method sums the amount of time required to serve all movements at saturation for a given cycle length and divides by that reference cycle length. This method is similar to taking a sum of ...