HC Deb 19 January 1965 vol 705 c56W
Sir R. Nugent

asked the Minister of Transport if he is aware that the practice of motorists signalling by flashing headlights is increasing and likely to cause confusion and danger instead of greater clarity unless official advice is given as to the use and meaning of the signal; and if he will give such advice, either in the Highway Code or by other suitable means.

Mr. Tom Fraser

I agree that differing interpretations of flashing headlight signals can be confusing and dangerous. Drivers have been advised to regard the flashing of headlights as having only the same meaning as sounding the horn—that is, an indication of the presence of a vehicle on the road. It should not be regarded as indicating that a vehicle is either conceding or taking priority. I propose to include this advice in the next revision of the Highway Code.