Samenvatting
An investigation is described to find the most suitable sizes and colours for signs when seen in daylight against a background of trees, hedges and fields, as found behind two-thirds of the signs on trunk roads.
An investigation is described to find the most suitable sizes and colours for signs when seen in daylight against a background of trees, hedges and fields, as found behind two-thirds of the signs on trunk roads.
Traffic Engineering and Control, Vol. 2 (1960), No. 7 (November), p. 390-393, 397, fig., graph., tab.
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