Speed Vest is a cool concept product to help cyclists stay alive at night (or maybe even during the day). The vest hooks up to a sensor on the front wheel and displays a large readout of the cyclist’s speed so motorists can make decisions based on fact rather than their suspect judgement.
OK, so they’re not claiming any dramatic safety improvements, but it seems fairly logical that it should help. I suspect it could also be a bit of an ego-boost to the boy racer cyclists you see around town in their spandex knickers.
Why did you invent this? Have you ever outpaced cars and been honked at? Had a car almost wipe you out while making a turn? The Speed Vest was invented because we were curious to know if putting more information in front of drivers might change their awareness of bicyclists. That, and we suspect a lot of people don’t realize that an average person can bike 10-15 mph (15-25 km/h).