Speed cameras can detect you from hundreds of metres away, with modern laser/radar systems catching speeding vehicles from 100m up to half a kilometre (or even further for some high-end systems), often before you spot them, using technologies that measure speed instantly or calculate average speed over distance. While fixed cameras have signs warning you, mobile cameras in vans can operate from significant distances, capturing you well before you get close.
The mobile speed cameras using radar can detect your speed from several hundred metres away. However, for an accurate, prosecutable reading, the operator typically needs to be within a few hundred metres. The key point is they will have your speed locked in well before you get close enough to spot them.
Mobile speed cameras are typically housed in mobile speed camera vans, commonly used by the Police, capturing the exact speed of individual vehicles as they pass by using laser or radar technology. They can operate from stationary positions or while in motion, covering a range of up to one mile.
Fixed speed cameras are usually aimed at a specific patch of road within about 100 metres, indicated by dashed white evenly-spaced road markings. Mobile cameras, including vans, can typically detect from a mile away.
A Band A speeding fine would be appropriate if you were caught speeding between 31-40 mph in a 30-mph zone. Providing you accept responsibility for speeding, you will be required to pay a minimum £100 fine and receive three points on your licence.
Most police forces have a tolerance of 10% plus 2mph above the limit before a speed camera 'flashes'.
The "best" excuse for a speeding ticket appeal is usually a legally recognized defense, like a medical emergency, an unavoidable situation (e.g., vehicle breakdown), or proving the speed detection equipment was faulty, as these address the circumstances of the offense, not just an excuse. Common, though less reliable, excuses involve "I didn't see the sign" or "keeping up with traffic," but these often fail in court; being respectful and challenging the evidence (like radar calibration) offers a better chance.
Speed camera tolerance refers to the margin of error or buffer added to a vehicle's detected speed before a fine is issued, typically around 10% plus a small fixed number (e.g., 2-3 mph/km/h) for guidance, though this varies by region and police force, with some locations having specific rules (like 2 km/h for fixed cameras in Victoria) or no official tolerance at all (like WA). This buffer accounts for speed camera inaccuracies and vehicle speedometer variations, but it's only guidance, and police can choose stricter enforcement.
Here are possible defense themes for challenging a speed camera ticket:
Speed camera margins of error (or "tolerances") vary by location and camera type, often allowing a few km/h or a small percentage (e.g., 3 km/h for mobile, 2 km/h for fixed in some Australian states) off the recorded speed to account for device inaccuracy, but this isn't guaranteed and can change, so the safest bet is always to drive the posted limit to avoid fines.
If you exceed the limit by any amount — whether it's 1 km/h or 40 km/h — you can receive a fine, lose demerit points, have your motor vehicle impounded, or even face licence suspension for serious driving offences. Speeding isn't just about exceeding a number on a sign.
A speeding fine typically arrives within days to a few weeks (around 14 days is common), but can take longer (up to a month or more) due to processing backlogs or if the car isn't registered to your address, as notices are sent to the registered keeper. Hand-issued fines happen instantly, while camera fines usually appear in the mail or digitally.
No, driving 10 km/h under the speed limit isn't inherently illegal, but it can become an offense if it unreasonably obstructs traffic, meaning you're causing congestion or disrupting the flow, especially if you're in the wrong lane or on a fast road without good reason. There's no set minimum speed, but police can fine you under laws like Australia's Rule 125 for impeding other drivers, making the legality dependent on road conditions and your actions.
You can:
When disputing a speeding ticket in court, you have the right to:
Current speed camera technology allows detailed video and images of drivers to be taken from up to one kilometre away. Most cameras, however, use markings on the road to measure distance over time and determine your speed.
Speeding between 31 and 40 mph in a 30 mph zone constitutes three penalty points on your driving license. In addition to penalty points, a fine amounting to a proportion of your weekly income will also be imposed. More severe speeding offences can attract larger fines.
The 70mph limit is the front line of motorway safety, the importance of which is underlined by heavier penalties for speeding than on other roads. Maximum speeding fines, in general, can be up to £1,000.
The most believable excuses are short, specific, and tied to legitimate responsibilities or unavoidable situations. Examples include sudden illness, a medical appointment that couldn't be scheduled outside work hours, urgent family needs, or car/transportation issues.
Save Lives
Slowing down increases the likelihood of surviving a crash. Researcher Rune Elvik found that a 1% decrease in travel speed reduces injury crashes by about 2%, serious injury crashes by about 3% and fatal crashes by about 4%. Over 12,000 people died in speed-related crashes in 2008.
What happens if you don't pay a parking ticket?
How are speed cameras triggered? Speed cameras record a vehicle's speed by using detectors in the road or radar technology. Some are connected to traffic light cameras to monitor lights and junctions. If a vehicle exceeds the limit or travels over the stop line on a red light, the camera is triggered.
You can get a speeding ticket for going any amount over the limit, but most places have a small tolerance (like 10% + 2 mph or a few km/h) before enforcement cameras consistently catch you; however, a police officer can ticket you for even 1 km/h over, especially in school zones or for higher speeds, leading to fines, demerit points, or license suspension.
No, legally you cannot go 5 km/h over the speed limit, as any amount over the posted limit is a speeding offense, but enforcement often has a small tolerance, so you might get away with it, though it's a risk because some areas (like Victoria) are strict, and cameras can catch even slight infringements, with increasing penalties for higher speeds.