What’s the purpose of yellow crisscross lines at a junction?

Explanation: Box junctions are designed to keep junctions clear by preventing vehicles from stopping in the path of crossing traffic. A pupil should be taught not to enter the yellow-box area if their exit road isn't clear. The only exception is when a driver wants to turn right but is prevented from doing so by oncoming traffic.

Category: Band 2 traffic signs and signals

References: The Official DVSA Guide to Driving: Section 6, Know Your Traffic Signs: Page 67