Report on the 70 m.p.h. speed limit trial.

Author(s)
Road Research Laboratory RRL
Year
Abstract

The 70 mile-h speed limit was introduced on all roads in Great Britain (except those already subject to a lower limit) in December 1965. During a speed limit trial there was a marked reduction in the speeds of cars on motorways and an accompanying reduction of about 20% in motorway causalities compared with expected. On all-purpose main-roads subject to the 70 m.p.h. speed limit there was only a slight reduction in speeds and a small reduction in accident rates during the trial year. On the remaining all-purpose roads there was virtually no difference between the actual and expected numbers of accidents.

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Publication

Library number
A 7625 S IRRD 26869
Source

London, HMSO, 1967, 64 p.; Road Research Laboratory RRL Special Report ; No. 6

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.