Interesting extract below from:
April 1967 Commons Bill to allow the use of reflective number plates on all road vehicles as an aid to road safety.
In January this year the Road Research Laboratory issued Report No. 44 under the heading: "A road trial with reflectorised registration plates for motor vehicles"." In paragraph 2, on page 2, the Report states: "This Report describes a trial started early in 1964 with registration plates reflectorised with the material generally used for road traffic signs in the U.K. This material consists of spherical glass beads embedded within a transparent plastic having a smooth flat outer surface, and complies with the relevant requirements of B.S. 873â1959. It was accepted that at the outset such reflectorised plates are easier to read at night in the light of headlights and no more difficult to read by day than non-reflectorised plates." The results of the trial are shown in Section 6 of the Report, where it is stated that, after two years and 80,000 miles of use on the roads, the average reduction in reflective power was 42 per cent., but that this was still 60 times brighter than white paint and that the reflective power of the plates could be restored to 80 to 90 per cent. of the original by polishing with car polish. I remind the House that 80,000 miles of motoring represents six to seven years' motoring for the average driver. In its conclusions, the Report states that evidence was obtained that the use of reflectorised registration plates might be expected to increase safety at night.
I would point out that since April, 1964, when the trial was first begun, over 22,000 people have been killed, over 250,000 seriously injured and in excess of three quarters of a million slightly injured on our roads. This is no time for delay or procrastination; it is time for actionânow. The evidence is already known, and I can see no reason at all for further delay.
The advantages of the reflective plates are obvious, but I shall list them. They are:
(1) They are not dependent on their own lighting system. No battery, bulb, or wiring is required.
(2) They require little or no maintenance, except for an occasional wipe over for they are washed clean by the rain.
(3) Statistics can be produced to show that in the United States of America, where tests have been carried out in Minnesota, Maine, Illinois and Iowa, night-time accidents, especially rear end collisions, have been greatly reduced.
(4) If the plates were centrally positioned, they would give full warning of the approach of the "one-eyed monster", the vehicle with one front or one rear light out.
(5) They reflect at all angles, regardless of the position of the vehicle.
(6) They increase by five or six times the visibility distance of vehicles whose lights are switched off, or are not functioning and the legibility distance is increased by two or three times in the full beam of headlights.
(7) They are no dearer than the present type of plates and would cost about ÂŁ2 per pair, which, according to the Road Research Laboratory report, in Section 7, is the cost of ordinary registration plates at present in use.
(8) None of the materials which would be used for the manufacture of the plates would have to be imported. They are available in this country, and would not cost either the Government or the motorist any more money than at present.
(9) They would be of a uniform size and shape and virtually indestructible.
(10) They would be a positive aid to police and to law enforcement. Mobile patrols would be able to read with much greater ease the number of an oncoming vehicle and similarly one that was going away from them.
Full Bill:-
https://api.parliament.uk/historic-hans ... ber-plates