Areas (including footways) accessible only to pedestrians and pedal cyclists and closed to other traffic (extra light duty)
Areas (including and light tractor paths) accessible to vehicles (excluding commercial vehicles) or livestock (light duty)
Malls and areas open to slow moving commercial vehicles (medium duty)
Carriageways of roads and areas open to commercial vehicles (heavy duty}
General docks and aircraft pavement (extra heavy duty - E)
Docks and aircraft pavements subject to high wheel loads (extra heavy duty - F)
Docks and aircraft pavements subject to very high wheel loads (extra heavy duty - G)