You can challenge a bus lane PCN by making representations to the issuing authority within the deadline on the notice, and then appealing free of charge to an independent adjudicator if the authority rejects them. The grounds that succeed most often are non-compliant signage, use outside the lane's hours of operation, permitted vehicle classes, brief incursion rather than deliberate use, and camera evidence that does not establish the contravention.
This guide covers each of them, and the order in which to check your own case.
Who issued your bus lane PCN, and under what power
Bus lane enforcement is camera enforcement. The notice arrives by post, addressed to the registered keeper.
- In London, boroughs and TfL enforce bus lanes under the London Local Authorities Act 1996. TfL also enforces its own red route bus lanes.
- Outside London, bus lane enforcement now runs under Part 6 of the Traffic Management Act 2004 and the 2022 enforcement regulations, which consolidated the older regime from 31 May 2022.
The regime matters less than the common requirements: a lawful restriction, compliant signs, an approved camera device, a properly served notice, and a contravention that meets its legal definition.
Ground 1: The signs did not do their job
A bus lane is created by a Traffic Regulation Order and communicated to drivers through prescribed signs and road markings under the Traffic Signs Regulations and General Directions 2016.
The signage must tell an approaching driver four things in time to act: that there is a bus lane, where it starts, which vehicles may use it, and during which hours. Recurring failures:
- No sign at the start of the lane, or a sign hidden by foliage, other signage or parked vehicles
- Faded or worn lane markings that no longer clearly delineate the lane
- Hours of operation missing or inconsistent between signs on the same stretch
- Signs that appear only after the point where a driver is committed to the lane
- Signage that does not match the underlying Traffic Regulation Order
Photograph the approach as a driver sees it, at the same time of day if lighting matters. Adjudicators respond to evidence of what was actually visible, not to assertions.
Ground 2: You used the lane outside its hours
Many bus lanes operate only at peak times. Outside those hours, any vehicle may use the lane. Automated enforcement systems are supposed to be configured to the lane's hours. They are not always. Compare the time printed on your PCN stills with the hours displayed on the lane's signs. This is a two-minute check that wins cases outright.
Ground 3: Your vehicle was permitted
Licensed taxis, motorcycles and cycles are permitted in some lanes and not others, and the sign for that lane is definitive. Private hire vehicles are frequently caught out because some lanes admit "taxis" (meaning licensed hackney carriages) but not private hire. If your vehicle class was within the classes displayed, the contravention did not occur.
Ground 4: Brief incursion is not deliberate use
The contravention is being in a bus lane, but adjudicators have repeatedly distinguished momentary or partial incursion from actual use of the lane: crossing the line to pass a broken-down or right-turning vehicle, being directed in by a police officer, or clipping the lane at its start while merging.
Camera stills capture moments. If the footage shows seconds of partial contact rather than a vehicle driving along the lane, the evidence may not establish the contravention. Request the full video, not just the stills. You are entitled to see the evidence relied on.
Ground 5: The camera evidence or the notice is defective
The camera must be an approved device under SI 2022/71. The PCN must state the mandatory particulars, identify the correct location, vehicle and time, and be served within the statutory window. Wrong penalty amounts, wrong locations and defective wording all render a notice challengeable. These points sound technical because they are. They also work.
Challenge your bus lane PCN with the right letter
The Bus Lane PCN Challenge Letter covers signage compliance, hours of operation, exempt vehicles, camera evidence and brief incursion. £15.
The process, and the mistake that ends winnable cases
Make representations to the authority within the deadline on your notice. It must respond, and if it rejects your case it must tell you how to appeal to the adjudicator: London Tribunals in London, the Traffic Penalty Tribunal elsewhere. The appeal is free and the authority bears the burden of proof.
A challenge succeeds on specifics: the regulation the authority failed to meet, the evidence that shows it, and the demand for disclosure that puts the authority to proof. The Bus Lane PCN Challenge Letter is built exactly that way, for both the council and TfL routes. For the wider camera enforcement framework, see the moving traffic PCN guide.
The letter for this
Council PCN Code 34, Being in a bus lane
Written for this specific ground, with the law cited and the evidence demands built in. Complete the placeholders and send it.
Included free with the letter
- How to Submit Your Tribunal Appeal
- How Council Parking Appeals Work
- Your Bus Lane or Red Route Penalty
Frequently asked questions
How much is a bus lane fine?
It varies by authority and area. The penalty is set within statutory bands, with a discount (usually 50%) for payment within the discount period stated on your PCN. In London penalties are higher than in most areas outside London. The exact amounts, dates and discount window are on the notice itself. Check them against the legal maximums for your area, because a PCN demanding the wrong amount is defective.
Do bus lane fines come with penalty points?
No. A bus lane PCN is a civil penalty against the vehicle's registered keeper. It is not a criminal matter, it never carries licence points, and it does not affect insurance. That also means the process is paperwork, evidence and deadlines, which is exactly where defective notices get cancelled.
I only clipped the bus lane for a second. Do I still have to pay?
Adjudicators distinguish between deliberate use of a bus lane and a brief or partial incursion, for example crossing the line to pass a right-turning vehicle or pulling in momentarily and immediately leaving. Camera stills that show only a moment of contact with the lane do not always establish that the vehicle was driven in the bus lane in any meaningful sense. This is one of the most commonly upheld grounds.
Are taxis and motorcycles allowed in bus lanes?
It depends entirely on the signs for that specific lane. Some lanes admit licensed taxis, motorcycles and cycles, some do not. The blue sign at the start of the lane and its repeaters state which vehicles are permitted and during which hours. If your vehicle class was permitted, or the signs were unclear about it, that is a full defence.
What if the bus lane signs were missing or unreadable?
Bus lane signs and road markings must comply with the Traffic Signs Regulations and General Directions 2016 and must give an approaching driver time to see, read and react before committing to the lane. Missing start signs, obscured signs, faded markings, or signs that do not state the hours of operation are grounds on which adjudicators cancel penalties.
Who do I appeal a bus lane PCN to?
First, make representations to the authority that issued the PCN within the deadline on the notice. If it rejects them, appeal to the independent adjudicator named in the rejection: London Tribunals for London authorities and TfL, or the Traffic Penalty Tribunal for councils outside London. Both are free to use.
Check your bus lane PCN against the law.
The Bus Lane PCN Challenge Letter covers signage, hours, exempt vehicles, brief incursion and camera evidence, with versions for council and TfL penalties.