Traffic Solutions offer a range of interactive signs that include Periodic LED Speed signs and School safety signs with incorporated 200mm flasher unit. These electronic LED speed limit signs are designed for use in locations where a reduced speed limit is critical at certain times of the day. The signs are fully programmable solar or mains powered amber flashing beacons for use on School Warning signs that not only use the very latest in LED technology but provide a highly visible means of alerting motorists as to the presence of a school and taking caution with their speed.