How We Choose
RoadLens evaluates dash cams and accessories using manufacturer specifications, official documentation, and editorial analysis — not in-house lab testing. This page explains exactly what that means and what we look at.
Our approach
We do not put dash cams through our own lab tests, and we do not claim to. Our evaluations are built from manufacturer specifications, official product documentation, feature analysis, use-case analysis, and comparison against other products in the same category — the kind of evidence that is publicly available and verifiable, rather than a private test we ask you to take on faith.
Where specifications leave a genuine gap — how a camera performs in a specific edge case, for instance — we say so rather than filling it with a guess dressed up as a finding. See our editorial policy for how we distinguish manufacturer claims from our own analysis throughout the site.
What we look at: video quality
Resolution (1080p, 2K, 4K), sensor generation (for example STARVIS-class sensors), HDR support, and frame rate, read directly from the manufacturer’s published specifications. We weigh these against what they mean in practice — plate legibility at distance, file size, and card requirements — rather than treating a bigger number as automatically better.
What we look at: camera coverage
Whether a setup is single-channel, front-and-rear, or adds a cabin and/or additional exterior angle, and what each configuration is documented to capture. We match this against real use cases — a private commuter, a rideshare driver, a family car — since more channels are not automatically the right choice for every driver.
What we look at: night performance
We look at what the manufacturer specifies for low-light performance — sensor class, infrared lamp count, HDR handling of headlight glare — and explain what that specification is likely to mean for real footage. We do not claim to have personally compared night footage side by side unless that evidence is actually available to us.
What we look at: parking mode
Whether parking mode is supported, what trigger types are available (motion, impact, continuous), and — critically — what power source it requires and whether a low-voltage cutoff is documented. Parking mode that can flatten a car battery without a cutoff is a real risk, not a footnote, so we treat this as a core evaluation point rather than a checkbox.
What we look at: installation
How the product is documented to be installed — plug-and-play, hardwire, or requiring an additional kit — and how much of that install a typical owner can reasonably do at home versus needs a shop for. We link to our own installation guides wherever they apply to a specific product.
What we look at: storage
What card capacity and speed class the product requires or ships with, and whether that is realistic for the resolution and channel count on offer. A camera that needs a high-endurance U3/V30 card but ships with a slower or smaller one is a real trade-off we call out.
What we look at: software and connectivity
Wi-Fi, GPS, app support, and voice control, based on what is documented. We treat these as genuine conveniences worth noting, not as a substitute for the fundamentals above — a camera with a polished app and weak night performance is not a strong recommendation just because the app is nice.
What we look at: value
How a product’s feature set compares to others at a similar position in our lineup, and where the money visibly goes (sensor and build quality, or extras and packaging). We do not have access to real-time pricing history, so value assessments are about feature-for-feature comparison, not a claim about long-term price trends.
What this means for you
Treat our specification-based conclusions as a well-researched starting point, not a substitute for checking the manufacturer’s current documentation before you buy — specifications and firmware can change after a product page is written. For anything safety-critical, like a hardwire install, follow the manufacturer’s instructions and your vehicle’s documentation.