Spur route
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A spur route is a short
Canada
In the province of Ontario, most spur routes are designated as A or B, such as Highway 17A, or 7B. A stands for "Alternate Route", and usually links a highway to a town's central core or main attraction, while B stands for "Business Route" or "Bypass", but are used when a main highway is routed around a town and away from its former alignment. The designation of "C" was used twice (Highway 3C and 40C), and is assumed to mean "Connector". Both highways have long since been retired and are now
).India
The
Italy
The acronym RA stands for Raccordo autostradale (translated as "motorway connection"), a relatively short spur route that connects an
Japan
In Japan, spurs of its
New Zealand
In New Zealand, spurs on
Such spurs and spur roads leading from smaller urban thoroughfares to individual facilities are often referred to in New Zealand as "feeder roads".
Romania
All national roads, local roads and county roads have spur routes. A good example is DN1 and DN1A. DN1A goes from Bucharest to Brașov via Buftea, and have an intersection with DN1 at Ploiești. After Ploiești, DN1A goes to Vălenii de Munte, Cheia, and then DN1A goes directly onto the Brașov.
United Kingdom
In the UK, a spur route carries the same definition, but the numbering rules differ.
Same-number spurs
Short spurs from primary roads or motorways typically are not given a unique number, and three arms of the junction will apparently have the same number. For example, the
Unique-number spurs
Typically, slightly longer spurs, or those with intermediate
A-road spurs do not follow a noticeable numbering system; they would be impossible to assign due to the quantity of A-road numbers in use.
United States
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In the US, many
Spur Interstate routes have three-digit numbers with an odd first digit. A subsidiary route either passing through a city or bypassing it and then reconnecting to a major highway would receive an even first digit, and be considered a loop rather than a spur. For example, in the case of Interstate 5, Interstate 105 is a spur route ending at Los Angeles International Airport, whereas Interstate 405 begins and ends at Interstate 5, bypassing downtown Los Angeles.
Spurs are also found branching from
There are many numbering violations in the spur route numbering system, thus the general rules above do not always apply (e.g. U.S. Route 400—there is no parent "route 0").
See also
- Special route
- Loop route
References
- ^ "Japan's Expressway Numbering System Outline". Retrieved 15 August 2019.