HC Deb 16 October 1973 vol 861 c79W
Mr. John Wells

asked the Secretary of State for the Environment why the notices on the M1 near Watford saying "Surface Noise" are located after the noise has begun instead of being a suitable warning distance ahead.

Mr. Rippon

The signs were moved from an advance warning position to the present site two years ago after consultation with the police. The siting will now be reviewed again.