oa Civil Engineering = Siviele Ingenieurswese - Vehicle speeds on Transvaal rural roads

Volume 31, Issue 12
  • ISSN : 1021-2000



Vehicle speeds at six sites on Transvaal rural roads between 1973 and 1987 are descriptionbed. The mean speed of light vehicles at the end of the period is 5 km/h higher than it was at the beginning of 1973; heavy vehicles were travelling 17 km/h faster. Between 1985 and 1988 the mean speed of cars increased by 1,2 km/h per year on freeways and by 4.8 km/h per year on non freeway roads. At the end of 1987 30 per cent of car drivers on freeways and 15 per cent on non-freeway roads were exceeding 120 km/h.

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