Spur

From Roader's Digest: The SABRE Wiki
Jump to: navigation, search
Spur
Spur.png
A classic spur - the A449 north of Worcester splits into two - one segment leads to the city, the other to the M5.
Cameraicon.png Pictures related to Spur
View gallery (1)

A spur is a road (often a relatively short one) that turns off to one side from another (typically more important) road.

The M50 was originally often known (including in official documents) as the Ross Spur, because as seen on a map it is a spur from the M5 (though built first), and goes to Ross-on-Wye.

On SABRE the term spur is mostly used in the more specific sense of a spur which shares the road number of the road from which it turns off, giving that numbered road three (or more) endpoints.

The original classification of roads was designed more to identification for funding and maintenance than navigation purposes, and consequently spurs did not originally exist. However, as road numbers became to feature more prominently on signs from the 1930s onward, it was decided that making short links spurs of longer roads would aid in navigation.

Barring one or two earlier exceptions, spurs as we know them today were created in 1933 by David Therrel, who had become responsible for road numbering in the Southern Engineering Division. Given the task of revising road numbers after construction of the Basingstoke Bypass, he decided to not use the then current practice of allocating a 4 digit number to the former A30 between the eastern end of the bypass and Hackwood Road, but simply numbered it as a spur of the A339. After mentioning this when asked for his comments on improving road signing, the MOT decided to take a country wide look at rationalising the numbering of roads, which led to the 1935 Road numbering revision, creating many spurs in the process.

Today, probably the most common cause of a spur is of a minor road joining a now bypassed road, and splitting in two directions to cover all of the old route. For example, the A559 once turned off to the north from the main A556 near Northwich; when the A556 was re-routed along a new bypass to the south of the town, the bypassed length of A556 became A559, creating a three-arm junction at which all arms are A559.

Motorway spurs are listed here.

This page includes a scan of a non-free copyrighted map, and the copyright for it is most likely held by the company or person that produced the map. It is believed that the use of a limited number of web-resolution scans qualifies as fair use under United Kingdom copyright law, where this web page is hosted, as such display does not significantly impede the right of the copyright holder to sell the copyrighted material, is not being used to generate profit in this context, and presents information that cannot be exhibited otherwise.
If the copyright holder considers this is an infringement of their rights, please contact the Site Management Team to discuss further steps



Spur
Related Pictures
View gallery (1)
Spur.png
Road Basics
Physical layoutSingle track • Single carriageway • Dual carriageway • High Quality Dual Carriageway • Road Widths • Urban Streets • Abandoned Road
Legal typesAll-purpose Road • Special Road • Motorway • Trunk road • Principal road • Classified Numbered road • Classified Unnumbered Road • Unclassified road • Primary Route • Non Primary Route • Right of Way • Unadopted road
Road numbers1922 Road Lists • Classification • Defunct road • Euroroutes • MoT Maps • National Cycle Network • Numbering principles • Numbering anomalies • Disputed Numbers • Recycled number • Unallocated numbers • Fictional Road Numbers • Junction numbers
Road FeaturesAutomatic Bollard • Balancing Pond • Arterial Road • Bott's Dots • Bypass • Cannon • Cats' Eyes • Cattle Grid • CD Lanes • Central Reservation • Chopsticks • Crash Barrier • Cuttings and Embankments • Cycle Lane • Emergency Phone • Escape lane • Expressway • Fingerpost • Flare • Ford • Gore • Green Bridge • Green Wave • Hairpin bend • Hard shoulder • Island • Junction • Layby • Level Crossing • Local Access Road • Managed Motorways • Multiplex • No-Car Lane • Oxbow Road • Parapet • Petrol station • Raised Pavement Markers • Ramp Metering • Retaining Wall • Road Studs • Roadside Art • Roadside Quarry • Roadworks • Secret motorway • Signage • Smart Motorway • Snow pole • Speed Limit • Spur • Street Lighting • Surface Dressing • Temporary terminus • Throughpass • Tidal Flow • Tiger tail • Toll booth • Traffic cone • Traffic Signals • Tunnel • Weaving • Wig-Wag Signals
Traffic CalmingBuild-Outs • Chicane • Dragon's Teeth • Pinch Point • Quiet Lane • Rumble strips • Safety Cameras • Sleeping Policeman • Speed bump
Public Transport FeaturesBus Lane • Bus stop • Guided Busway • Park and Ride • Tramway • Trolleybus System
Other termsAnderson report • Guildford Rules • Highway Authority • Motorway alphabet • Pre-Worboys • Primary Destinations • Roads by 10 • Transport alphabet • Worboys report
AcronymsAADT • ADS • ANPR • ATM • DfT • GSJ • HA • HATO • HE • HETO • HQDC • LAR • LILO • MOVA • NCN • NMU • NRA • PBU • PTS • PFI • RCS • SABRE • SCOOT • SON • SOX • SRN • TEN-T • TERN • TfL • TII • TOTSO • TRO • TSM • TSRGD • UTC • VAS • VMS • VSL