Members of the Olympic Family will travel on a lane in the Olympic Ring that is to be reserved for their exclusive use. Essentially, this means Athens’s denizens will have to forget about using their cars during the Games in quite a large part of Attica, since the Olympic Ring will also sport bus lanes as well. On many roads, this means there will only be one lane free for other vehicles. A number of measures will be implemented to police the Olympic road network: * All intersections will have foot-patrol officers to direct traffic, giving priority to accredited vehicles of officials and athletes. * Foot and car patrols will be constantly on the move on the road network – a form of preventive policing. * Cameras to monitor traffic and record violations, traffic signs to inform drivers (of traffic conditions), and sensors measuring traffic volume will be placed along roads. * Traffic will be monitored constantly by air by helicopters, plus one blimp. * There will be restricted traffic and parking zones round Olympic venues. * Restrictions on the movement of certain categories of vehicles, such as those carrying dangerous materials, will be imposed over extended periods of time. Supply times for stores and street markets will be probably be at night so as to prevent supply vehicles remaining parked for a long time and blocking traffic. * The public will be constantly informed of changes and modifications to traffic arrangements, so as to prevent movement to congested areas. Apart from Attica, similar measures will be taken in the four other Olympic cities (Thessaloniki, Volos, Patras and Iraklion) as well as on their approach roads. Traffic police in Thessaloniki and the police forces of the other three cities will be responsible for applying the measures. Apart from police officers, police volunteers, who will be supplied with the necessary equipment, will also be used to implement the regulations.