02/04/2023
The advent of dash cams has revolutionised road safety and provided invaluable evidence in the event of accidents. However, the seemingly simple act of mounting a dash cam can have significant legal ramifications if not done correctly. In the United Kingdom, specific regulations govern the placement of such devices to ensure they do not compromise driver visibility or create a road hazard. Understanding these guidelines is paramount for any motorist utilising a dash cam.

Understanding UK Dash Cam Placement Zones
The Driver and Vehicle Standards Agency (DVSA) and the Department for Transport (DfT) have established clear guidelines regarding where a dash cam can and cannot be positioned. These guidelines are designed to maintain a clear and unobstructed view of the road for the driver, which is a fundamental aspect of road safety. To illustrate these rules, a common visual representation uses a system of zones:
- Zone A (The Red Zone): This is the most critical zone. It encompasses the area directly in the driver's line of sight, which is essential for safe driving. Positioning a dash cam anywhere within this red zone is strictly prohibited. Any obstruction in this area is considered a serious traffic offense and can lead to penalties, including fines and points on your licence. This is because even a small obstruction here can significantly impair your ability to see hazards, pedestrians, or other vehicles, especially in poor weather conditions or at night.
- Zone B (The Orange Zone): This zone is a slightly larger area that typically covers the windscreen wiper's sweep path. While not as strictly prohibited as Zone A, there are still limitations. The UK law permits a 40mm intrusion into the green area of Zone B. This means that while some part of the dash cam might extend into this area, it must not excessively obstruct the driver's view or interfere with the operation of the wipers.
- The Green Zone: This is the optimal and legally compliant area for dash cam placement. It is generally located towards the edges of the windscreen, often behind the rear-view mirror, where the device will not obstruct the driver's primary field of vision. Positioning your dash cam within this designated green zone ensures compliance with regulations and maximises the effectiveness of the camera without compromising safety.
- Zone X (The Red Area of Obstruction): This is essentially a reiteration of the red zone, specifically highlighting areas that would cause an obstruction to the driver's view. It's crucial to remember that the primary concern is maintaining an unimpeded line of sight.
The Importance of the Green Area
The emphasis on the green area is not just about avoiding legal trouble; it's also about ensuring your dash cam functions effectively. The green zone is strategically positioned to avoid the build-up of dirt, rain, and road spray that can accumulate on the windscreen, particularly in the path of the windscreen wipers. If your dash cam is placed in the orange zone (the wiper's surface) and the wipers are activated, dirt and water from the road can be smeared across the lens, rendering the footage useless. By placing the dash cam in the green area, you ensure that the lens remains as clean as possible, capturing clear and usable footage at all times.
Consequences of Incorrect Placement
Mounting your dash cam in the wrong place can lead to several negative consequences:
- Legal Penalties: As mentioned, obstructing your view is a traffic offense. The police can issue on-the-spot fines and penalty points if your dash cam is deemed to be a hazard.
- Invalid Insurance Claims: If an accident occurs and it's found that your dash cam was illegally positioned, your insurance provider may deem your claim invalid. This could leave you liable for the full cost of repairs and damages.
- Compromised Footage: An improperly placed dash cam might not capture crucial details of an incident, rendering the footage useless as evidence. Furthermore, if the lens is obscured by dirt or rain due to its placement, the footage quality will suffer significantly.
Best Practices for Dash Cam Installation
To ensure you comply with UK regulations and get the most out of your dash cam, follow these best practices:
- Consult Your Dash Cam Manual: Most dash cam manufacturers provide specific instructions on optimal placement. Always refer to these guidelines.
- Utilise the Windscreen Mount: Most dash cams come with suction cup or adhesive mounts designed to attach to the windscreen. Ensure the mount is secure and the device is firmly in place.
- Position Behind the Rear-View Mirror: This is often the most discreet and legally compliant location. Many dash cams are designed to be compact and fit neatly behind the mirror, minimising any potential obstruction.
- Test Your View: Before you start driving, sit in the driver's seat and ensure that the dash cam does not impede your view of the road, mirrors, or traffic signals in any way. Adjust the position if necessary.
- Consider the Cable Routing: Ensure that the power cable is neatly routed and does not hang loose, potentially interfering with your driving or controls. Many people opt to route the cable along the A-pillar trim for a cleaner installation.
A Comparative Look at Placement Options
To further clarify the best approach, let's consider a simple comparison:
| Placement Area | Compliance with UK Law | Impact on Visibility | Effectiveness |
|---|---|---|---|
| Directly in front of the driver (Zone A/Red) | No - Serious Offense | High obstruction | Poor (footage may be obstructed) |
| Within 40mm of Zone B's green area (Orange Zone) | Permitted, but with caution | Potential obstruction, especially with wipers | Moderate (risk of smearing) |
| In the designated green area (behind rear-view mirror) | Yes - Compliant | Minimal to no obstruction | High (clear, unobstructed view) |
Frequently Asked Questions about Dash Cam Placement
Q1: Can I place my dash cam on the dashboard?
A1: Generally, it is not recommended. While not explicitly forbidden in all cases, placing a dash cam on the dashboard can easily lead to obstruction of your view, especially if it is a larger unit or positioned incorrectly. The windscreen offers a more consistent and legally compliant mounting surface.
Q2: What are the specific dimensions for Zone B intrusion?
A2: UK law allows for a maximum of 40mm intrusion into the green area of Zone B. This is a crucial detail to remember when positioning your device.
Q3: Does the type of mount affect placement?
A3: Yes, the mount can influence where you can legally and effectively place your dash cam. Suction cup mounts are common for windscreens, while adhesive mounts can also be used. Ensure the mount is sturdy and doesn't add to any potential obstruction.
Q4: What if my car's windscreen has a tinted band at the top?
A4: Many modern cars have tinted bands at the top of the windscreen. You must ensure your dash cam is mounted below this tint to avoid obstructing your view and to ensure clear footage. The green zone typically exists below this tint.
Q5: What is the penalty for illegally placing a dash cam?
A5: While specific fines can vary, the offense is typically considered 'obstructing the driver's view,' which can result in a fixed penalty notice (often a fine and penalty points) or potentially more severe penalties if it leads to an accident.
Conclusion
The correct placement of a dash cam in the UK is not merely a matter of convenience; it is a legal requirement with significant safety implications. By adhering to the zoning guidelines, particularly by avoiding the red zone and understanding the limitations of Zone B, motorists can ensure they are driving legally and safely. Prioritising the green zone for your dash cam installation guarantees that your device functions optimally, providing clear footage while maintaining an unimpeded view of the road ahead. Always remember that your primary responsibility as a driver is to maintain full visibility, and a well-placed dash cam is a tool that aids, rather than hinders, this crucial aspect of driving.
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