This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Authoritative guide to police powers to stop vehicles in England and Wales: explains the legal basis in the Road Traffic Act 1988, what officers may do after stopping a vehicle, search and testing powers, driver obligations and rights during a police vehicle stop. Fully informative for the public and solicitors.
In England and Wales, police have specific statutory powers to stop vehicles on public roads and investigate matters ranging from road safety to criminality. These powers are essential tools for effective policing, enabling officers to check driving documentation, enforce traffic laws, prevent crime and protect public safety. At the same time, they operate within a strict legal framework designed to protect individual rights. This article explains when and how the police can stop a vehicle, the laws that authorise these powers, what officers may do once a vehicle is stopped, and what rights drivers and passengers have. The content is based on current legislation, official guidance and authoritative legal resources.
Legal Basis for Police to Stop Vehicles
Section 163 – Road Traffic Act 1988
The principal statutory power allowing police to stop a vehicle is section 163 of the Road Traffic Act 1988. It provides that:
- A constable in uniform may require a person driving a vehicle on a public road to stop when signalled to do so.
- The driver must comply; failing to stop when required is a criminal offence.
- The power does not require the officer to provide a reason for the stop.
This power can be exercised at any time and for any purpose consistent with policing duties, including random or routine stops. For example, officers might stop vehicles to check documents or because of suspected traffic offences or criminal activity.
Officers Who May Exercise the Power
A uniformed police constable routinely exercises section 163 powers. In some police forces, Police Community Support Officers (PCSOs) may be designated with the power to stop vehicles under this section, subject to force policy and designation rules.
When Can Police Stop a Vehicle?
1. Routine or Random Stops
Under section 163 RTA 1988, officers may stop drivers without needing a specific reason. This means a constable could signal for a vehicle to pull over even where there is no apparent offence. The law regards this as lawful so long as the officer is in uniform and acting within the scope of their official duties.
Examples include:
- Spot checks on driving documents
- Routine checks for roadworthiness or compliance
- Engagement with the public to promote road safety
- Part of broader operational activity on a road or highway.
2. Stops After Suspected Offences
Police can also stop a vehicle when they suspect a traffic offence or other criminal conduct. This includes summonsing a driver for:
- Dangerous or careless driving
- Driving without a licence, insurance or MOT
- Driving under the influence of alcohol or drugs
- Involvement in criminal activity such as vehicle theft.
Stops under these circumstances may lead to further investigation, enforcement action, or arrest where necessary.
What Police Can Do After Stopping a Vehicle
Document and Safety Checks
Once a vehicle is stopped, officers may:
- Request to see your driving licence
- Request to see your insurance certificate and MOT certificate
- Check the vehicle for defects or regulatory compliance.
You are legally required to produce these documents when asked. If you do not have them with you, you may be given a seven‑day period to take them to a police station. Failure to do so is, itself, an offence.
Breath and Drug Testing
If police have reasonable grounds to suspect that a driver has been drinking alcohol or using drugs whilst driving or in charge of a vehicle, they may require a breath, blood, or urine test under the relevant road traffic legislation.
Searches
Police cannot automatically search a stopped vehicle or its occupants simply because they have stopped the vehicle under section 163. To conduct a search, officers need a specific statutory power to search such as:
- Section 1 of the Police and Criminal Evidence Act 1984 (PACE) – allows a search of the vehicle, driver or occupants when an officer has reasonable grounds to suspect prohibited items (e.g. drugs, weapons or stolen goods).
- Section 43A of the Terrorism Act 2000 – allows stop and search of vehicles and their occupants where there is reasonable suspicion of terrorism‑related activity.
Officers must explain the legal authority they are relying on when conducting a search.
Further Detention and Arrest
If, during or after the stop, police have reasonable grounds to suspect that an offence has been committed, they may escalate the encounter to an arrest under appropriate powers such as section 24 of the Police and Criminal Evidence Act 1984. An arrest brings its own statutory rights and safeguards, including explanation of rights and custody procedures.
Obligations on Drivers and Passengers
Duty to Stop
Under section 163, you have a legal obligation to stop when required by a uniformed constable. Failing to stop can result in prosecution and penalties, including potential custody time depending on the offence and circumstances.
Providing Documents
You must produce:
- Your driving licence
- Your insurance certificate
- Your MOT certificate (where applicable)
If these are not immediately available, you may be directed to produce them at a police station within a specified timeframe.
Compliance With Lawful Instructions
Police may give lawful directions during a vehicle stop, such as instructing occupants to exit a vehicle where there is lawful authority for such a direction (for example, to ensure safety or as part of an arrest), but this must be grounded in statutory powers or articulated lawful purpose. Note that current law does not automatically confer a specific statutory power to require occupants to get out purely following a section 163 stop; reform proposals have been discussed in policing circles to address this gap.
Your Rights During and After a Vehicle Stop
During a lawful vehicle stop:
- You have the right to ask why you are being stopped.
- You must comply with lawful requirements to produce documents and to stop when asked.
- You do not have to answer open‑ended questions about your journey, destination or similar matters where not legally required.
If you believe that your stop was conducted improperly or unlawfully (for example, without lawful authority or in a discriminatory manner), you can file a formal complaint with the relevant police force. In more serious cases, there may be scope for legal claims such as unlawful detention or discrimination claims, subject to applicable procedures and time limits.
Key Takeaways
Police in England and Wales have a broad statutory power under section 163 of the Road Traffic Act 1988 to stop vehicles on public roads. This can be used for routine checks, to investigate suspected offences, or to protect road safety and public security. Once stopped, police may inspect driving documentation, test for alcohol or drugs, and, where authorised by further law, search the vehicle or its occupants. Drivers must comply with lawful requirements to stop and produce documents, and have rights in how the stop is conducted. Clear statutory conditions and procedural safeguards govern these powers, and appropriate complaint and legal redress mechanisms exist where those conditions are not met.
