Obscuration of traffic signs and signals
By: by M. McDonald, O. Starkey and K. S. Rutley.
Contributors: Starkey, O.; Rutley, K. S.; Transport and Road Research Laboratory.
Series: Contractor report / Transport and Road Research Laboratory -- 100
Publisher: Transport and Road Research Laboratory]
Published: 1988
Place of publication: [Crowthorne, Berks
Language: eng