You should also
- watch out for signals given by other road users and proceed only when you are satisfied that it is safe
- be aware that an indicator on another vehicle may not have been cancelled.
General rules, techniques and advice for all drivers and riders · Signals
You should also
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.