This report describes an experiment to determine the effect of fog on the speed and spacing of traffic on the M4 motorway. A discussion of visual range in day and night time fog is included to show that these two conditions should be considered separately. In the range of day-light fogs tested (visibility down to 150m) the relations between mean traffic speed and visibility are well defined and…
Ruang Koleksi Umum Rak: 3
Design Manual for Roads and Bridges 9