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9 relations: American Association of State Highway and Transportation Officials, Assured clear distance ahead, Design speed, Motor vehicle, PDF, Solomon curve, Speed limit, Traffic psychology, United States.
American Association of State Highway and Transportation Officials
The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols and guidelines which are used in highway design and construction throughout the United States.
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Assured clear distance ahead
The Assured Clear Distance Ahead (ACDA) is the distance ahead of any terrestrial locomotive device such as a land vehicle, watercraft, skates, or skis, although commonly an automobile, which can be seen to be clear of hazards by the driver, within which they should be able to bring the device to a halt; drivers generally may not pose an "immediate hazard" upon where or when they cannot assure such distance ahead is clear.
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Design speed
The design speed is a tool used to determine geometric features of a new road during road design.
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Motor vehicle
A motor vehicle is a self-propelled vehicle, commonly wheeled, that does not operate on rails, such as trains or trams and used for the transportation of passengers, or passengers and property.
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The Portable Document Format (PDF) is a file format developed in the 1990s to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.
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Solomon curve
The Solomon curve is a graphical representation of the collision rate of automobiles as a function of their speed compared to the average vehicle speed on the same road.
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Speed limit
Road speed limits are used in most countries to set the maximum (or minimum in some cases) speed at which road vehicles may legally travel on particular stretches of road.
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Traffic psychology
Traffic psychology is a discipline of psychology that studies the relationship between psychological processes and the behavior of road users.
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United States
The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.
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