Driver knowledge of road safety factors in three developing countries

5 1 10 Driver knowledge of road safety factors in three developing countries Sayer, I.A. Primary Author mixed material TRRL 1981 Improving road safety education in developing countries; Ghana Sayer, I.A. Primary Author mixed material TRRL 1997 Current research into the effectiveness of some low-cost engineering remedial measures in developing countries Sayer, I.A. Primary Author mixed material TRRL 1990 Low-cost engineering measures Sayer, I.A. Primary Author mixed material TRRL 1991 Low Cost Engineering Measures in Egypt, Ghana and Pakistan Sayer, I.A. Primary Author mixed material PTRC 1991