Without reflectors, a driver can se a pedestrian at night at from about 100 feet. With good quality reflectors, the visibility increases to up to 500 feet. Look for the EN13356 mark to ensure adequate reflective power. A smaller sized reflector or one made with inferior reflective material (read cheaper) may not increase visibility as much.
Under ideal conditions (dry weather and along dark empty road without distractions), we have measured the funflector® reflectors to be visible from at least 600 feet.
