Intermodal routing

Intermodal routing calculates routes that combine multiple transport types in a single journey. When the travel mode is set to Intermodal, the route may include transit, pedestrian, rental, taxi, and vehicle legs. Pedestrian legs are always enabled and are used to connect between other transport types.

Leg types

An intermodal route consists of one or more legs, each representing a different transport type. The following leg types can appear in an intermodal route.

Leg type	Description
Pedestrian	Walking segments that connect other legs. Always enabled and cannot be disabled.
Transit	Public transit segments using buses, trains, subways, and other transit modes. Supports the same transit modes as Transit routing.
Rental	Rental segments. Currently supports car share.
Taxi	Taxi segments. Currently supports car-based taxis.
Vehicle	Private vehicle segments. Currently supports car.

EnabledFor options

For transit, rental, taxi, and vehicle legs, you can use EnabledFor to control which portion of the route allows that leg type. The following values are supported.

Value	Description
FirstLeg	Enable this leg type for the first non-pedestrian leg of the route.
LastLeg	Enable this leg type for the last non-pedestrian leg of the route.
EntireRoute	Enable this leg type for the entire route.
None	Disable this leg type entirely.

Modes

For transit, rental, taxi, and vehicle legs, you can control which modes are used with AllowedModes or ExcludedModes. These are configured at the individual leg type level.

• AllowedModes – Only the specified modes are used. All other modes are disabled.

• ExcludedModes – The specified modes are disabled. All other modes remain enabled.

You cannot use AllowedModes and ExcludedModes together for the same leg type.

Unsupported fields

Intermodal routing supports a different set of request fields compared to other travel modes. The following top-level fields are not supported when the travel mode is set to Intermodal.

Field	Description
Allow	Road features to allow during route calculation, such as high occupancy lanes.
Avoid	Road features or areas to avoid during route calculation, such as toll roads or ferries.
Driver	Driver-related options such as schedule or rest rules.
Exclude	Exclusion options such as specific countries to avoid.
OptimizeRoutingFor	Optimization objective for routing, such as fastest or shortest distance.
SpanAdditionalFeatures	Additional span-level features such as speed limits or road attributes.
Tolls	Toll cost calculation options.
Traffic	Traffic usage options for route calculation.
TravelStepType	The TurnByTurn value is not supported for intermodal routing.
Waypoints	Intermediate waypoints along the route.