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Forum: Advocacy & Safety

10-25-13, 10:48 PM

Replies: 40

Rear Mounted Radar: does such a product exist?

Views: 4,630

Posted By dougmc

Here's such a system (on a truck, not a bike, and...

Here's such a system (on a truck, not a bike, and aimed forward) in action: http://www.youtube.com/watch?v=ridS396W2BY

Quite impressive.

Forum: Advocacy & Safety

04-18-12, 10:32 AM

Replies: 40

Rear Mounted Radar: does such a product exist?

Views: 4,630

Posted By dougmc

But it's wavelength that matters here, not...

But it's wavelength that matters here, not frequency. (And yes, I'm aware of the relationship between the two.) That said, a 40 kHz sound wave and a 30 GHz microwave have roughly the same...

Forum: Advocacy & Safety

04-17-12, 10:16 AM

Replies: 40

Rear Mounted Radar: does such a product exist?

Views: 4,630

Posted By dougmc

I don't see where it needs to be particularly...

I don't see where it needs to be particularly large.

Ultrasonic might be the easiest way. Bounce a pulse back, see how long it takes to come back -- that will give you the distance. Look at the...

Forum: Advocacy & Safety

04-16-12, 08:23 PM

Replies: 40

Rear Mounted Radar: does such a product exist?

Views: 4,630

Posted By dougmc

I do not know of any such product. However, I...

I do not know of any such product. However, I question how effective it could be for the use you've brought up -- and I'm guessing not very.

For a car, when the (front mounted) device can control...

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