§ 57. Sir B. Jannerasked the Minister of Transport whether, in view of the failure of central barriers on the M.1 and elsewhere, he will now arrange for the use of rosa multiflora Japonica bushes to prevent accidents on the motorways; and if he will make a statement of the progress made so far in relation to central barriers.
§ Mr. Tom FraserThe Road Research Laboratory is experimentiing with the shrub, but the standard central reservation is not wide enough to accommodate an adequate thickness to act as a crash barrier. Experiments with the use of shrubs as anti-dazzle barriers are at present taking place on M.2. Present evidence on the value of barriers on central reservations is inconclusive, but it seems possible that at certain levels of traffic flow they contribute to more accidents than they prevent. Experiments are therefore continuing.