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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 ...
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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 ...
Due to Highway revolts in New York state forcing the interstate to terminate prematurely, none of the spurs of I-78 in New York City (I-278, I-478, I-678, I-878) connect to the parent road I-78, nor is there any surface street with a state route designation with the same number that continues with a solid connection.
These type of lists are known by the rest of Wikipedia as "long lists"; per Wikipedia:Naming conventions (long lists) and current NYSR practice, the split lists shall be named "List of county routes in <county> County, New York (N1–N2)" (where county is the county that the routes are in, N1 is the low end of the range covered by the article ...
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]
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 ...