Does the driving direction have an impact on distances?
Posted: Mon Mar 11, 2019 10:22 am
Hi there,
every once in a while customers wonder about the difference of distances depending on the relations direction.
In other words:
The geometry of the routes is not the same, e.g. other roads are used.
Of course the next question is then "why does the router not use the same streets?"
And then it comes to speed values and optimization. Here's another example:
So sometimes adding waypoints creates better distances and worsens the period. If the route is focused on period the +ROUTE is not better then.
Best regards,
Bernd
every once in a while customers wonder about the difference of distances depending on the relations direction.
In other words:
- Why is the distance(A:B) not always equal to distance(B:A)?
- Why is a distance matrix not symmetric?
The geometry of the routes is not the same, e.g. other roads are used.
- Route from Stuttgart to Madrid and back.
In the region of Lyon the router takes different superregional tracks
And then it comes to speed values and optimization. Here's another example:
| DIR | Distance | Period | COST | Track |
|---|---|---|---|---|
| N to S | 206070 | 7194 | 101666 | WEST |
| N to S + | 186209 | 7733 | 102025 | EAST |
| S to N | 184261 | 7786 | 102031 | EAST |
| S to N + | 204647 | 7370 | 102765 | WEST |
Best regards,
Bernd
