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Traffic Statistics

Volume 114: debated on Monday 6 April 1987

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asked the Secretary of State for Transport what is the number of vehicles using the roads of England and Wales, as a proportion of the 24-hour traffic count, in hours of darkness, in proportion to the number of accidents that occur during the same hours at night in two-lane roads; and if he will categorise these statistics by the type of accident.

The proportion of traffic in the hours of darkness varies with the type of road and with the time of year. Here is an illustrative example:

Principal roads in non built-up areas:
October: England and Wales
Per cent.
Estimated proportion of dark hours traffic Proportion of accidents occurring in darkness (1985):27
Fatal43
Serious32
Slight27
All29