Last updated: 02/04/2013
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Cornwall Council has a speed management strategy that promotes
appropriate speed for the circumstances.
Applying a speed limit to an inappropriate area can result in
flagrant disregard by drivers. This can have the knock-on effect of
increasing accidents and speeding up some drivers. More
significantly it devalues the effectiveness of limits in general,
which would ultimately be counter-productive.
Low speed limits are not effective when applied to stretches of
open road in rural locations. Such limits are usually applied only
in villages or towns where the consistent built-up area presents a
series of potential hazards that require a general speed
restriction. The need for this can be easily appreciated by
drivers, which engenders respect for the limit.
Speed limit signs
Signs have to be erected where there is a change in speed limit.
If the national speed limit applies and the road changes between
dual and single carriageway the speed limit change does not have to
30 mph limit
Restricted roads and their associated 30 mph speed limits are
established by the presence of a “system of lighting furnished by
means of lamps placed not more than 200 yards apart” (s81 and 82 of
the Road Traffic Regulations Act 1984). If such lighting were
removed, a new Traffic Regulation Order would be required to
sustain the 30 mph limit on that road. Repeaters cannot be used
where the speed is 30mph and there is a system of street lighting