Fred66
Well-Known Member
The Highway Code is littered with musts and shoulds, musts are backed by law shoulds are normally covered in the not driving with due care and attention.From a driving school site
https://students.passmefast.co.uk/
Who are the ‘authorised persons’ who can signal you to stop?
Although there are a number of road users who might give arm signals—car drivers and cyclists among them—there are certain authorised people whose signals you must obey by law. These are:
- Police officers
- Traffic officers
- Driving Vehicle and Standards Agency (DVSA) officers
- School crossing patrols
So presumably marshalls (and farmers) can warn other road users that there's a hazard ahead but not force them to stop
Of course if you plough into anyone or anything in your car you are probably committing an offence so it's in everyone's interests that you don't
So whilst ignoring someone (other than the authorised persons) trying to slow or stop you whilst you are driving might not be against the law, if you do ignore them and go on to cause an accident then you might still be prosecuted.