HC Deb 29 November 1972 vol 847 c148W
63. Sir J. Gilmour

asked the Secretary of State for Scotland what form of road construction on the second section to be opened of the M90 motorway precludes the markings of the edges of the carriageway with white lines and reflectors.

Mr. Gordon Campbell

On this section the edge of the carriageway is defined by a reflective concrete kerb. It is not standard engineering practice to add a white line and reflectors.

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