Vehicle speed check

Would love to see a way to record the speed of a vehicle. I don’t set my camera up to record vehicles because there are so many. Last night a sports bike flew through my neighborhood at a high rate of speed at 3am. It’s obvious they were at such a dangerous speed, but the police said with no proof of how fast they were going, there was nothing they could do. I would love to be able to set my camera to record vehicles going 10 or 15 mph over the neighborhood speed and display their speed so I could help save a life or two. I would post the video in question, but apparently as a new user I am not allowed. Thank you all and please support this idea.

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By the time you get the Wyze cam live view, the car is already gone. Get a radar gun.


You can figure this out right now with a little maths and video of a moving car.


With knowing a few variables, you can find the approximate speed of a moving car. Lets find the aprox speed of a car driving in front of my house.

First, i need to know the distance they travel. Lets start when the vehicle passes the edge of my neighbors driveway to my east, and then travels to an edge of the driveway to a neighbor to my west (i have a overview of my street camera so its basically one edge of my V3’s frame to the other edge, but knowing physical landmarks, which will be important next). Next going into google maps, measure the approximate distance from the east point, to the west point. Rounding down slightly, i get 165 feet.

Next, I need the time it took for the car to get from the east point, to the west point. The Wyze time stamp doesn’t include milliseconds, so i have to count frames. I loaded the event video onto my computer and opened in VLC, and i counted exactly 100 frames from the east point to the west point. Knowing that my driveway V3 records in 15 fps at night, then playing the 100 frames equals 6.67 seconds.

I know know the distance the vehicle covered is 165 ft in 6.67 seconds. Because maths is hard for me, i’ll use this online calculator. There are many online calculators that help with this.

This gives you an approximate speed. I know that my east start point is right after a 90 degree turn, so the car was probably going less than 16 mphs there, and then as the vehicle hit the west point, it was probably going faster than 16 mphs. This gives you an average. If you were measuring between two points in the middle of the neighborhood or on a stretch of highway, i’d say you’d get a pretty accurate measurement of speed between your points and not more of an average speed.

This is how law enforcement uses airplanes to get speeders on the highways.


Several friends are law enforcement. They don’t go after the motorcycles because they know they can’t catch them. Unless it is a felony, they won’t bother with speeding motorcycles.
They would prefer to wait until the idiot wraps himself around a pole then write the report.

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I would enjoy seeing that as well as the outside temperature.

With video, IMO there would be proof of what happened, but at 3am, the darkness, the bike speed, no chance of a license plate or really a good description of the rider and bike, WHO it was would be hard to impossible to prove.