(fields involved: shapes.txt - shape_pt_lat, shape_pt_lon, shape_pt_sequence, shape_dist_traveled, stop_times.txt - shape_dist_traveled)
- There must be a shape point within 30 meters of any stop on a trip. The shape will not be used otherwise.
- Shapes that have lots of looping or inlining should have values for the field “shape_dist_traveled” in both stop_times.txt and shapes.txt. A common value to use for the shape_dist_traveled field is the distance from the beginning of the shape as traveled by the vehicle. Please note this differs from the straight line distance as the straight line distance is not how the vehicle actually travels through the street network.
- The shapes should match the real-world roads, railways etc. on Google Maps.
Example of shape quality requirements: shape follows road.