Roadclock
Mark the video, place the pins, read the speed.
Roadclock works out how fast a vehicle was moving from footage you already have. Mark a frame in the video, place the matching point on a map, and it measures the ground distance and the true time between marks. Set a point of interest and watch the distance to it close.
Speed measured, not guessed
Everything Roadclock reports comes from two things it can actually measure: how far apart two points are on the ground, and how much time passed between the frames you marked.
Mark the frame, place the point
Drop a marker on a video frame and put the matching position on the map. Later marks land near the last one, so most of the work is a short drag.
A figure you can stand behind
Each stretch reports the speed actually measured across it, held flat rather than smoothed into a curve. Outside the marked range nothing is invented: it reads as blank instead of a guess.
Distance to a point of interest
Mark the thing that matters, a stop sign, a crosswalk, the point of impact, and the distance to it updates as the vehicle moves between your marks.
Line it up with the road
Alignment guides with adjustable spacing and rotation let you match lane lines and markings, and offsets account for where the camera sits relative to the bumper and the centre of the vehicle.
Ground worth measuring on
Switch between Apple maps, aerial views and public survey imagery. Roadclock looks up the sharpest public photography covering your pins, which in some counties means aerial imagery at a few inches per pixel.
A map view you can show
Produce a moving map that follows the vehicle, flat and north up or in three dimensions, with the readout drawn over the top.
For working out what happened on the road
Roadclock came straight out of accident investigation: a video, a road, and a question about how fast something was going that has to be answered properly.
- Accident investigation
- Reconstruction
- Insurance and claims
- Safety professionals
- Video analysts
- Forensic professionals
Status: Roadclock is in active development, and we use it on our own investigations. It replaces a larger tool of ours that tried to do too much.
Got footage and a question about speed?
Tell us what you are trying to work out. We’ll email you when Roadclock is ready.
Also see CaseWork Pro and Conditions.Site.