Traffic Calming on Main Roads through Villages 1.1.1 Experimental judder bars on approach to West Bretton, W Yorks. Stone 'gateposts' produce optical narrowing effect. Note also rough red road surface incorporating speed limit reminder, 'slow' on road. Timber 'gateposts' produce optical narrowing effect.
Traffic island prevents overtaking.
Signing on approach 3 Views of roundabout 3. Signs are mounted on the back of slow-moving convoy of trucks, with flashing amber lights. This technique can be useful for operations such as gully-cleaning, white lining, which gradually move along the motorway. An example of good practice in roadworks signing. Highly Congested Networks 5.1.1 Rama I Rd at Henri Dunant Rd, Bangkok, 1984.