three surveys on the usage of headlamps in lighted streets were carried out in the winter months of 1976, 1977 and 1978 respectively. the 1976 and 1978 surveys were conducted by the statistics directorate of the department of transport, and were designed to assess the overall rate of usage of headlamps in great britain. the 1977 survey was conducted by the transport and road research laboratory, in order to measure changes since 1968/69 in the rate of headlamp usage in six large cities. according to the 1976 survey, 74 per cent of motor car and taxi drivers in great britain used headlamps whilst driving at night in lighted streets. in large towns the usage rate averaged 61 per cent, whereas in other areas with street lighting the usage rate averaged 89 per cent. the 1978 survey showed that the overall usage rate had increased from 74 per cent to 83 per cent in the two year period. in large towns the rate was 76 per cent and in other areas with street lighting it was similar to the 1976 usage rate. the 1977 survey showed that headlamps usage in six cities is now much more prevalent than in 1968/69 in good as well as in poor lighting conditions.(a)

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