When can you park on these markings outside a school?

Explanation: You shouldn't stop on yellow zigzag lines outside schools, not even to set down or pick up children or other passengers. This is to make sure passing drivers and pedestrians have an unobstructed view.

Category: Road and traffic signs

References: The Official DVSA Guide to Driving: Section 6, Highway Code: Page 116, Know Your Traffic Signs: Page 56