§ Mr. CorbynTo ask the Secretary of State for Transport if he will give his estimate of average traffic speed in central London for each year since 1979.
§ Mr. Peter BottomleySurveys of average traffic speed in central London are conducted at three-yearly intervals. Available results since 1979 are as follows:
Average traffic speed in central London kilometres per hour1 Morning peak period 1980 19.4 (12.1) 1983 18.9 (11.8) 1986 18.4 (11.5) Daytime off-peak period 1980 18.6 (11.6) 1983 19.0 (11.9) 1986 17.6 (11.0) Evening peak period 1980 19.5 (12.2) 1983 18.4 (11.5) 1986 17.6 (11.0) 1 Figures in brackets refer to speed in miles per hour. Detailed results of the most recent survey are published in Department of Transport statistics bulletin (87)41. A copy is in the Library.