The Highway Code is issued with the authority of Parliament. The Road Traffic Act 1988 and the Road Traffic (Northern Ireland) Order 1995 refer specifically to the Highway Code and Highway Code for Northern Ireland respectively.
Many of the rules in the Code are legal requirements. If you disobey these rules, you're committing a criminal offence. You can be fined, have penalty points put on your licence or be disqualified from driving. In the most serious cases, you can be sent to prison. Such rules are identified by the use of the words 'MUST/MUST NOT'. In addition, the rule includes an abbreviated reference to the legislation that creates the offence. An explanation of the abbreviations can be found in 'The road user and the law' of the Highway Code.
If you don't comply with the other rules of the Code, it won't, in itself, lead to a prosecution. This includes rules that use advisory wording such as 'should/should not' or 'do/do not'.
The Highway Code contains rules not only for motorists but also for pedestrians, cyclists, horse-riders and even covers herding of animals and the use of powered wheelchairs.
Motorways are 'special roads' that are designed for high-speed traffic and to which special regulations apply.
As traffic travels more quickly on motorways, the law specifies that it can't be used by certain types of vehicles such as: pedal cycles, motorcycles under 50cc, motorised wheelchairs or mobility scooters not exceeding 254kg unladen weight, certain slow-moving vehicles, agricultural vehicles, animals, and pedestrians. There are number of rules that are specific to motorways, such as: