11. Like for instance slip roads onto dual-carriageways or motorways. 12. Work will involve replacing the current southbound entry slip road and widening the A43 southbound. 13. Similarly, slip roads pass under or over the main motorway at Junctions 41 and 42. 14. The extensive cutting created for the motorway junction and slip roads crosses the tunnel alignment. 15. The alignment of the slip roads leaves a wide space between for the unbuilt carriageway. 16. Traffic signals are operated part-time on slip roads , which are used to temporarily store traffic. 17. The slip road will result in less traffic turning into the expressway at the interchange, 18. The eastbound slip road to the roundabout was the eastbound carriageway A18 ( M ). 19. Plus a bit more for slip roads ( ramps ) and a fair bit more bridges. 20. However, roundabouts are often used for the junction between the slip roads and the intersecting road.
