Drive carefully and slowly when passing a stationary bus showing a ‘School Bus’ sign as children may be getting on or off.

Road users requiring extra care · Pedestrians
Drive carefully and slowly when passing a stationary bus showing a ‘School Bus’ sign as children may be getting on or off.

In the Highway Code, MUST and MUST NOT identify legal requirements. Advice using should, should not, do or do not can still be used as evidence in court proceedings under the Traffic Acts to establish liability. The introduction explains this distinction.
The Code reads in order, and each of these names the rule it goes to rather than saying only ‘next’.
The rules the Code files beside this one, in its order.
The other groups in this part of the Code, and the rest of it.