ts
```c++
// Get routable left lanelet if it exists
Optional<ConstLanelet> left = graph->left(*fromLanelet);
// Get non-routable left lanelet if it exists
Optional<ConstLanelet> adjacentLeft = graph->adjacentLeft(
                                                *fromLanelet);
// Get following lanelets
ConstLanelets following = graph->following(*fromLanelet);
```
#### or queries that return relations:
```cpp
// Get relations to all left lanelets
ConstLaneletRelations leftRelations = graph->leftRelations(
   