Cumulative distance and time measurements at a position along the route.
Both fields are optional because a progress entry may omit either value.
Use RouteProgressAtPoint for the resolved (always-present) equivalent
returned by interpolation utilities.
Cumulative distance and time measurements at a position along the route.
Both fields are optional because a progress entry may omit either value. Use RouteProgressAtPoint for the resolved (always-present) equivalent returned by interpolation utilities.