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  2. Surface Transportation Assistance Act - Wikipedia

    en.wikipedia.org/wiki/Surface_Transportation...

    Roadway Express, Inc., 481 U.S. 252, that due process requires that employers receive prereinstatement notice of the employee's allegations, notice of the substance of the relevant supporting evidence, an opportunity to submit a written response, and an opportunity to meet with the investigator and present statements from rebuttal witnesses ...

  3. Traffic collision reconstruction - Wikipedia

    en.wikipedia.org/wiki/Traffic_collision...

    Traffic collision reconstruction is the process of investigating, analyzing, and drawing conclusions about the causes and events during a vehicle collision. . Reconstructionists conduct collision analysis and reconstruction to identify the cause of a collision and contributing factors including the role of the driver(s), vehicle(s), roadway and gen

  4. Traffic engineering (transportation) - Wikipedia

    en.wikipedia.org/wiki/Traffic_engineering...

    Highway safety engineering is a branch of traffic engineering that deals with reducing the frequency and severity of crashes. It uses physics and vehicle dynamics, as well as road user psychology and human factors engineering, to reduce the influence of factors that contribute to crashes. A typical traffic safety investigation follows these ...

  5. Roadway Express - Wikipedia

    en.wikipedia.org/wiki/Roadway_Express

    Roadway Express, Inc. was an American less than truckload (LTL) trucking company. Roadway Express and its holding company, Roadway Corporation, were acquired by logistics holding company Yellow Corporation in 2003, and the parent companies were merged to form Yellow Roadway Corporation, later renamed YRC Worldwide.

  6. Transportation safety in the United States - Wikipedia

    en.wikipedia.org/wiki/Transportation_safety_in...

    [6] [7] The National Safety Council (NSC), a nonprofit safety advocacy group, estimates U.S. motor vehicle deaths in 2016 were 40,200, a 14% increase from its 2014 estimate. [8] After decades of improvements in road safety for pedestrians, the pedestrian death rate in the United States has skyrocketed since 2009 while most comparable countries ...

  7. Roadway departure - Wikipedia

    en.wikipedia.org/wiki/Roadway_departure

    The intention is to help the driver to keep the car on the roadway. They are usually expensive unless included in a highway reconstruction project. A relatively inexpensive countermeasure is the placement of a Safety Edge — a 30° compacted taper on the edge of the pavement. This helps any driver that runs off the edge of the roadway to ...

  8. Fundamental diagram of traffic flow - Wikipedia

    en.wikipedia.org/wiki/Fundamental_diagram_of...

    The flow and capacity at which this point occurs is the optimum flow and optimum density, respectively. The flow density diagram is used to give the traffic condition of a roadway. With the traffic conditions, time-space diagrams can be created to give travel time, delay, and queue lengths of a road segment.

  9. Assured clear distance ahead - Wikipedia

    en.wikipedia.org/wiki/Assured_Clear_Distance_Ahead

    [114] [13] [112] This is because the probability of spontaneous traffic increases proportionally to the density of road access points, and this density reduces the distance a person exercising ordinary care can be assured that a road will be clear; such reduction in the ACDA is readily apparent from the conditions, even when a specific access ...