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Route restrictions

To safeguard user privacy and ensure authorized access only to entities or organizations directly managing a territory, Google Maps Platform has implemented the following restrictions for the Roads Selection API:

• Low road usage restriction: For privacy reasons, the service does not share information about routes with low traffic volume. This means that when you create a new route, the Roads Selection API service first ensures that traffic volume for that route exceeds a threshold such that no one individual's navigation details can be identified. If the service determines that the traffic does not meet that threshold, that route's traffic information won't be published.

• Quarterly evaluations: Given the dynamic nature of traffic flow, all published routes undergo quarterly evaluations for traffic volume. If the service determines a route to have low traffic during this evaluation, then it issues a warning message in the BigQuery routes_status table. If low traffic usage is detected for four consecutive quarters, the route is classified as invalid, and the publication of traffic information for that route ceases. A low-traffic route, even when designated as invalid, remains subject to traffic evaluation. Subsequent evaluations may reclassify the route as valid should traffic volume exceed a predetermined threshold. A route's validation status can be found in BigQuery routes_status table or it can be queried through get-selected-route method using the selected_route_id for the route.

• Jurisdiction restriction:

  In order to ensure that you're authorized to retrieve traffic information for the selected route you created, we validate and ensure that the route's coordinates fall within the jurisdiction you manage. If the route is partially or completely found to be outside the jurisdiction, then the route is marked as invalid and no information is retrieved for this route. This check happens after the route is created and before any information is retrieved for the route.

  For more information on how your jurisdiction is defined and managed, see Defining and managing jurisdiction