Many people forget the law about box junctions and will drive into them without checking that they won’t end up stationery in one. By understanding correctly how to use a yellow box junction you can help keep traffic flowing and promote safe driving. Obstructing a yellow box junction can result in a fine, and it goes without sayings that inappropriate use of a yellow box junction will fail a driving test.
Yellow boxes have criss-cross yellow lines painted on the road and are easy to spot. They’re usually found in busy areas, where traffic flow is important. You should never enter the box until your exit road or lane is clear. That said, you may enter the box if you are waiting to turn right, and are only stopped from doing so by oncoming traffic, or by other vehicles waiting to turn right. At signalled roundabouts you must never enter the box unless you can pass over it completely without having to stop.
Safe driving from Britannia!