Police officers Traffic approaching from the frontTraffic approaching from both front and behindTraffic approaching from behind From the sideFrom the frontFrom behind**In Wales, bilingual signs appear on emergency services vehicles and clothing Arm signals to persons controlling traffic I want to go straight onI want to turn left; use either handI want to turn right Driver and Vehicle Standards Agency officers and traffic officers Traffic officerDVSA officerThese officers now have new powers to stop/direct vehicles and will be using hand signals and lightsignals similar to those used by police. You MUST obey any signals given (see Rules 107 and 108). School crossing patrols Not ready to cross pedestriansBarrier to stop pedestrians crossingReady to cross pedestrians, vehicles must be prepared to stopAll vehicles must stop