HC Deb 20 May 1965 vol 712 cc260-1W
31. Mr. Biggs-Davison

asked the Secretary of State for the Home Department, what consideration he has given to the application of the barograph principle to radar used by the police to check the speeds of motor vehicles.

40. Mr. Charles R. Morris

asked the Secretary of State for the Home Department to what extent radar speed check equipment in current use by police authorities in this country is based on the barograph principle.

Mr. George Thomas

Meters fitted with barograph type recording instruments are generally used to estimate the average speed at which traffic is moving rather than the speeds of individual vehicles. My right hon. and learned Friend is not aware of any grounds for taking out of use the standard type of meter used by police forces in this country.