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EFLECTORISED edgelines )uld cut the accident rate by ver 20 per cent, claims the oad Marketing Research Inastry Group.
Results of tests carried out n 15 miles of rural roads in ast Sussex were compared ith those on roads without dgelines.
To ensure a fair comparison f results the sites for the antrol sample were selected y the Transport and Road :esearch Laboratory so as to ave similar characteristics of hose with edgelines.
iight time
Over a 12-month period njury accidents on the test oads showed an average lecrease of 47 per cent against in increase of 7 per cent on the !ontrol roads with the biggest !hange shown in night time iccidents.
The cost of accidents on the est roads were reduced from 133,960 to £70,920 giving a ost benefit ratio of over 15:1 'or a one-year period.
Over the three-year life of :he road marking, benefit to :..ost could be as high as 40:1.
An interpretation of the results applied to the 1973 national accident figures would have reduced road deaths by a total of 580 and injury accidents by over 11,000, providing a saving of £29 million in accident costs.