HC Deb 12 February 1951 vol 484 c17W
117. Air Commodore Harvey

asked the Minister of Transport what steps he is taking to ensure that traffic lights are not without a supply of electric current during power cuts.

Mr. Barnes

When there is a complete cut it is not usually practicable to provide an alternative source of current. I intend, however, shortly to issue a circular to highway authorities advising them of measures which might be adopted to minimise danger in the event of such cuts and to counteract voltage reductions, in so far as these may affect the older types of signals.