DennisOSRM/Project-OSRM — Issue #137: how should osrm handle impossible oneway dead-ends?
Author: emiltin
Created: 2012-02-21 09:23:49+00:00
State: open

if a dead-one is tagged as oneway, it's probably a mapping error; if the direction is toward the dead end, you can't get out again. if the direction is away from the dead end, you can't get into the street.

how should osrm handle such situations? right now osrm happily goes into such "oneway traps".

```
Given the nodes
| | x | |
| a | b | c |
| | y | |
And the ways
| nodes | oneway |
| abc | |
| bx | yes |
| yb | -1 |
```

several oneways pointing towards each other is another impossible situation.