. >> we have a cautionary warping to say there was a kerb again curve. >> is that v to i. >> v 2 i. position of the curve, the curve exit and points along the curve and the speed. it knows when to give me a warning. the cautionary is easy. hey, there's a warning up ahead. you don't want to do it 3 miles away, you want to do it when you are into range. >> reporter: the timing of the delivery of that information is crucial, isn't it? >> yes, because you don't want to alert a driver to brake too soon or too late because if you do, you get into nuisance alarm. if you warn the driver all the time it's a nuisance, and when they get a real alert they'll not pay attention. >> reporter: so the data you collected does it significantly improve safety. >> we found the technology works, they like to get the warnings coming from the awareness. >> reporter: originally when it comes to car safety you think of seat belts and protecting people if there's a crash. crashes. >> we believe that the future will be avoiding crashes, and this particular technology, v2v is probably the most powerful we have