Classes of crossings
Crossings can be classified according to the number of single and split(double) roads involved in the crossing.
3-Way-Crossings
- Simple 3-Way-Crossing (SSS)
- Simple road crossing a split road (SSD)
- Split road crossing a simple road (DDS)
- 3 Split roads crossing (DDD)
4-Way-Crossings
- Simple 4-Way-Crossing (SSSS)
- Split road crossing 3 simple roads (DSSS)
- 2 Split roads crossing 2 simple roads (DDSS)
- 3 Split roads crossing 1 simple road (DDDS)
- 4 Split roads crossing (DDDD)