What Lights?

flappy Posts: 21
edited July 2015 in Road buying advice
I’m getting back on a road bike after almost exclusively mountain biking for many years. As a driver I’ve seen some great rear lights on bikes which are ‘on’ constantly and flash brighter. From the driver’s seat I find them brilliant. Any ideas of a decent set of lights (pref rechargeable) which are quick to fit, light etc etc and are lighter than my mountain bike lights!