Trrl Lr 634 Experimental markings have been used in the roundabout at Slough - Central motorway interchange, to ease the problem of evening peak hour queues in the westbound exit slip road from M4. An exclusive lane was marked in the existing roundabout carriageway to allow left-turning traffic from the slip road to filter through roundabout, without having to give way to circulating traffic. …
1997 Annual Book of ASTM Standards. Section 4. Construction. Volume 04.03 Road and paving materials; vehicle-pavement systems
TRR NO. 1410 Pavement design, management and performance
TRR NO. 1410 Pavement design, management and performance