Go to http://www.roadsafety.com/ev_techspecs.php for full product description.
I was reluctant to use this at first; but from the backseat point of view, the ride has much improved. The warning system notifies the driver if they are breaking, turning, or accelerating too much, and allows the driver to slow down. This provides for a safer transport, and safer vehicle operations all together. You can also reduce wear and tear on breaks, and improve gas mileage by using this system. I strongly recommend any agency to use this product for any vehicle. What's more, it acts as a "black box" to exhonorate (or incriminate) the driver in case of a mishap.