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Runaway truck ramp. A runaway truck ramp, runaway truck lane, escape lane, safety ramp, emergency escape ramp, or truck arrester bed is a traffic device that enables vehicles which are having braking problems to stop safely. It is typically a long, sand - or gravel -filled lane connected to a steep downhill grade section of a main road, and is ...
Ingressing traffic is entering the highway via an on-ramp or entrance ramp, while egressing traffic is exiting the highway via an off-ramp or exit ramp. [11] Directional ramp A ramp that curves toward the desired direction of travel; i.e., a ramp that makes a left turn exits from the left side of the roadway (a left exit). [12] Semi-directional ...
A rail fastening system is a means of fixing rails to railroad ties ( North America) or sleepers ( British Isles, Australasia, and Africa ). The terms rail anchors, tie plates, chairs and track fasteners are used to refer to parts or all of a rail fastening system. The components of a rail fastening system may also be known collectively as ...
The first cloverleaf interchange patented in the US was by Arthur Hale, a civil engineer in Maryland, on February 29, 1916. [3] [4]A modified cloverleaf, with the adjacent ramps joined into a single two-way road, was planned in 1927 for the interchange between Lake Shore Drive and Irving Park Road in Chicago, Illinois, but a diamond interchange was built instead.
Traffic barrier with a pedestrian guardrail behind it. Traffic barriers (known in North America as guardrails or guard rails, [1] in Britain as crash barriers, [2] and in auto racing as Armco barriers [3]) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains ...
Simone Carter. August 14, 2024 at 4:28 PM. Nearly 400 gallons of ethanol spilled in Tacoma’s Tideflats near the Thea Foss Waterway on Tuesday after a train clipped a fuel truck, according to ...
Curb cut. A curb cut ( U.S. ), curb ramp, depressed curb, dropped kerb ( UK ), pram ramp, or kerb ramp ( Australia) is a solid (usually concrete) ramp graded down from the top surface of a sidewalk to the surface of an adjoining street. It is designed primarily for pedestrian usage and commonly found in urban areas where pedestrian activity is ...
Minimum railway curve radius. 90-foot (27.43 m) radii on the elevated 4 ft 81⁄2 in ( 1,435 mm) standard gauge Chicago 'L'. There is no room for longer radii above this street intersection at this cross junction at the Wells and Lake street intersection in the northwest corner of the loop. The minimum railway curve radius is the shortest ...