Snapped onto the motorway

When wanna going to a place near the motorway, the target point is snapped on the motorway, and we need to stop driving on the motorway which is very dangerous and prohibited by the law.
Example:
curl http://localhost:8002/route --data '{"locations":[{"lat":35.169715,"lon":136.931980},{"lat":35.194333,"lon": 136.911871}],"costing":"auto","costing_options":{"auto":{"use_tolls":0}}
,"directions_options":{"units":"km"}}'

ANy idea to avoid this?