The problem with reflective vests is that they only shine when there's light falling on them. That means a car has to be close enough before the driver can see you. Sometimes reflection just doesn't cut it. To increase your chances of getting seen in the dark when you're out jogging and riding your bike, you need something like the Verve by You Saw Me. It's the first in its industry to feature an ANSI certified retroreflective outer layer embedded with 60 custom color waterproof LEDs. It can blink and change colors and can catch the attention of drivers up to a mile away.
This was an unsuccessful kickstarter campaign.