The direction of a roadway. The values are based on the standard naming for US roadways and indicates the direction the traffic flow regardless of the real heading angle of the roadway.
| Value | Description |
|---|---|
northbound |
Road flow is in the northbound direction |
eastbound |
Road flow is in the eastbound direction |
southbound |
Road flow is in the southbound direction |
westbound |
Road flow is in the westbound direction |
inner-loop |
Road flow is on the inner loop of a ring road or beltway. In countries that drive on the right side of the road, this is the clockwise direction. |
outer-loop |
Road flow is on the outer loop of a ring road or beltway. In countries that drive on the right side of the road, this is the counter-clockwise direction. |
undefined |
Road flow does not have a signed direction. For a RoadEventFeature, the first and last coordinates in the feature's geometry represent the beginning and end of the road event in the direction of travel it impacts. |
unknown |
Road flow may have a signed direction, but the affected direction of travel is not known |
| Property | Object |
|---|---|
direction |
RoadEventCoreDetails |
road_direction |
FieldDeviceCoreDetails |
The Direction enumerated type values were based on the TMDD Link-alignment Enumeration, which contains the following values:
northbound (1)
eastbound (2)
southbound (3)
westbound (4)
inner-loop (5)
outer-loop (6)