Monitoring the status of the road network and prevailing traffic conditions is fundamental to road network operations. It is a support activity – but the activity is not an end product in itself. The data and information that are the products of monitoring, provide the raw material for other services – notably reporting road network status to traffic control room operators and providing information services to road users.
Network controllers and operators must have continual access to quantitative and qualitative information to manage and maintain the road network as effectively as possible.
Network monitoring involves keeping track in real-time of traffic conditions and external events likely to affect the use of the roadway, such as adverse weather, traffic incidents and other events. It includes
Quick response to incidents based on monitoring of road and traffic conditions enables the operator to take appropriate actions to minimise the negative effects of incidents. The resulting impacts of the operations activities are again monitored and evaluated to take further action. A closed loop of information involving monitoring, decision-making and evaluation of resulting impacts is thus maintained.