Road attributes – 5 Structure type

Structure type

The structure type gives information about the physical works applied to a road segment. Map Creator differentiates three types:

5.1 Open road

A road segment without any additional work.

Fig.: “Open road”

5.2 Tunnel

A road segment that functions as an underground passageway.

Fig.: “Tunnel”

5.3 Bridge

A road segment that functions as a crossing over an obstacle.

Fig.: “Bridge”

To edit structure type:

1) Precisely define the start and the end point of the tunnel or bridge by using existing nodes or shape points within an accuracy range of 20 m.

Fig.: Start and end point of a bridge with an existing shape point at the south end of the bridge

2) To create a start and/or end point:

  • Right-click on the road.
  • Select “Shape road” and a new shape point will be created at the selected location.
Fig.: Creating a shape point to define the bridge start/end location
  • Highlight the road and right-click on the shape point.
  • Select “Divide into 2 road segments” and a node will be created.
Fig.: Creating a node to define the bridge start/end location

3) After defining the start and end point of the tunnel or bridge, choose the appropriate structure type.

  • If tunnel or bridge is selected, the road segment receives a thicker outline to make the structure type visible.
Fig.: Setting the “Structure type” to “Bridge”

4) If the tunnel or bridge has a name in reality, then add it in the naming field.  Do not overwrite existing street names or route numbers.

Note:

  • A tunnel or bridge should be implemented when the length is greater than or equal to 200 m.
  • If the tunnel or bridge is shorter then 200 m then it can be implemented if it has an official name as a bridge.
  • When adding a new road segment that includes a tunnel or bridge, check road crossings to verify the underpass and overpass information is represented correctly.