HC Deb 18 March 1936 vol 310 c426
36. Lieut. - Commander FLETCHER

asked the Minister of Transport whether he will take steps to standardise the intervals of time in switching traffic-lights from amber to green and from amber to red and ensure that a reasonable period elapses in switching from amber to red?

Mr. HORE-BELISHA

It is intended to secure the maximum possible similarity, compatible with varying conditions, in the amber period, and observations are now being made at a number of selected junctions to this end.