Chapter 4 Traffic Control and Measure Equipment a, Information Classification Data Ir mage Voice Traffic volume, speed, I Traffic states Traffic flow occupancy, queues traffic incidents Incidents queue length, traffic incident location assistance incidents and nature Temperature Air pressure, humidity Rain. snow. Environment wind speed, direction, smoke, visibility precipitation visibilit State of roads, bridges facility and tunnela. Information Classification Data Image Voice Traffic flow Traffic volume, speed, occupancy, queues, queue length, traffic incidents Traffic states, traffic incidents, incident location and nature Incidents, assistance Environment Temperature, Air pressure, humidity, wind speed, direction, precipitation, visibility, Rain, snow, smoke, visibility facility State of roads, bridges, and tunnel Chapter 4 Traffic Control and Measure Equipment