§ 83. Mr. Woodburnasked the Secretary of State for Scotland the estimated extra cost per mile of reflecting kerbs compared with the ordinary type; and what approximate extra percentage this would add to the cost per mile of new road.
§ Mr. MaclayAbout £120 per mile on both sides. Assuming the cost of a 24 ft. road is about £60,000 per mile, this represents .2 per cent.
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§ Mr. Woodburnasked the Secretary of State for Scotland whether he has considered the Reports of the Department of Scientific and Industrial Research, RN 1689/PJFW GCW 1952 and RN/2993/AWC Mar., 1957, reporting that the use of reflecting kerbs can be made visible at night up to 100 yards; and whether he will specify, as a measure of road safety, kerbs with a normal night visibility of a minimum of eighty yards for all new roads.
§ Mr. MaclayI have considered these Reports, and I am now awaiting the results of extensive field trials of reflecting kerbs and other forms of marking the edge of the carriageway. It would be premature to specify standards of performance for these devices until we know more about the problem of maintaining them.