blockings: segment direction versus driving directions
Posted: Thu Jul 16, 2015 1:22 pm
Hello together,
these days a prospect asked me about the difference between some specific segment attributes he found in the RoadEditor / TruckAttributes. In the output of his routes he found the following two values:
The bold digit simply describes the segment direction to which the attribute refers...
It is important to know that each segment is stored in an oriented way with a START and a DESTINATION
See the following screenshots... If a segment restriction is applied in both directions it is labelled with a 2 - and therefore displayed without direction arrows:
If the restriction is only one direction we use the values 0 and 1 to separate the direction:
In the context of mapping we refer to the data direction used in the binary map data.
In the context of routing and the label as a ROADEDITOR_ADDITIONAL_OPTION (output of routing request) we refer to the driving direction.
The following routing screenshots have been made with TRUCK profiles...
I hope these screenshots explain the meaning 
Regards Bernd
PS
these days a prospect asked me about the difference between some specific segment attributes he found in the RoadEditor / TruckAttributes. In the output of his routes he found the following two values:
- MAX_AXLE_LOAD|0=1150
- MAX_AXLE_LOAD|1=1150
The bold digit simply describes the segment direction to which the attribute refers...
It is important to know that each segment is stored in an oriented way with a START and a DESTINATION
See the following screenshots... If a segment restriction is applied in both directions it is labelled with a 2 - and therefore displayed without direction arrows:
- WEIGHT-Restriction applied in both directions
- MAX_WEIGHT2.gif (4.17 KiB) Viewed 4160 times
- HAZARDOUS_GOODS restriction in one direction (destination to start)
- HAZARDOUS_GOODS 0=1.gif (8.78 KiB) Viewed 4160 times
- TRUCK RESTRICTION in one direction (start to end)
- BLOCKS_TRUCK1.gif (9.33 KiB) Viewed 4160 times
In the context of routing and the label as a ROADEDITOR_ADDITIONAL_OPTION (output of routing request) we refer to the driving direction.
The following routing screenshots have been made with TRUCK profiles...
- If the route is calculated against the restriction we are allowed to use the segments.
- Trying to drive in the direction of the blocking is not allowed and so we take a detour.
- Driving from south to north by car doesn't require a detour as the restriction is for trucks only - even in case of "in driving direction".
Regards Bernd
PS
- ATTRIBUTES north to south
- SOUTH to NORTH attributes truck
- south to north by car