SpeedVest.com, Inform Motorist!

Many different reason to wear something like this, one for attracting attention, the other to let motorist know that at times you are actually going faster than the speed limit. SpeedVest has LCD's on the back and illuminates like Radar signs that you pass on the road, the difference is that it displays your speed, letting all know how fast you are traveling.
• Increases awareness of the bicyclist and bicycling as an efficient way of getting around
• Educates drivers about overtaking bicyclists safely
• Illuminates that an average person can easily bike 10-15 mph (15-25 km/h)
SpeedVest.com