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Maximum grade: The maximum permissible vertical angle, or grade, along the highway is determined from terrain and design speed, [4] with up to 6% generally allowed in mountainous areas, 5% in rolling terrain, and 4% on level terrain. An additional 1% is allowed in urban areas.
Grade is usually expressed as a percentage - converted to the angle α by taking the inverse tangent of the standard mathematical slope, which is rise / run or the grade / 100. If one looks at red numbers on the chart specifying grade, one can see the quirkiness of using the grade to specify slope; the numbers go from 0 for flat, to 100% at 45 ...
In 2010–2011, the Illinois State Toll Highway Authority posted all new mile markers to be uniform with the rest of the state on I‑90 (Jane Addams Memorial/Northwest Tollway) and the I‑94 section of the Tri‑State Tollway, which previously had matched the I‑294 section starting in the south at I‑80/I‑94/IL Route 394. This also ...
The alignment is the route of the road, defined as a series of horizontal tangents and curves. The profile is the vertical aspect of the road, including crest and sag curves, and the straight grade lines connecting them. The cross section shows the position and number of vehicle and bicycle lanes and sidewalks, along with their cross slope or ...
The New York State Routes Task Force has developed the following article standards for page formatting and layout, which should be used on nearly all highway articles under this project's scope. Although these standards are designed with the Wikipedia Manual of Style (MOS) in mind, there may be an occasional instance where the MOS may conflict ...
State highway articles are generally titled in the form "[State] [road type] [number]" (e.g. Missouri Route 13, Oklahoma State Highway 3, New York State Route 17). Kansas and Michigan are the exception to this general trend, because those states' DOTs name their highways as "K-[number]" and "M-[number]" respectively. Each state's convention is ...
The portion of I-87 from the New York City line to Albany is part of the New York State Thruway mainline; at Albany, I-87 leaves the Thruway and becomes the Adirondack Northway. Aside from Albany, I-87 also serves Kingston NY, Glens Falls, and Plattsburgh. [6] I-88: 117.38: 188.90 I-81 in Chenango: I-90/New York State Thruway in Rotterdam: 1968 ...
The New York Codes, Rules and Regulations (NYCRR) contains New York state rules and regulations. [1] The NYCRR is officially compiled by the New York State Department of State's Division of Administrative Rules. [2]