HC Deb 07 February 1973 vol 850 c111W
Mr. Jessel

asked the Secretary of State for the Environment what investigations the Government are now making, or have made, into different types of central safety and separation barriers in urban dual carriageways; and with what results so far.

Mr. Peyton

The central safety barriers are similar to those used on rural roads; these were developed after lengthy investigations by the Transport and Road Research Laboratory.