Name

Road segment Name

Traffic flow

Will display 18 hour or 1 hour depending on the calculation options

Traffic speed

Average traffic speed

Percentage heavies

Trucks as a proportion of total flow and express as a percentage.

Road width

This defines the road edge.  With the normal model (not on ground) the height of the road is also carried out to the road edge.  It also defines the edge of the hard ground.  Default surface is soft ground in the CoRTN model.

Source Height

Height of the traffic stream noise source above the road.

Impervious Pervious

Standard CoRTN road surface specifications

Other

User defined road surface correction - departure from Standard CoRTN but approved by road authorities  Used in conjunction with the scroll bar to specify the correction relative to DGA road surface.

Traffic direction

Direction of flow relative to digitising direction.  Used when calculating gradient correction