| { |
| "num_vehicles": "<int> Number of vehicles available in the dial-a-ride fleet.", |
| "num_users": "<int> Number of users requesting transportation service.", |
| "vehicle_capacity": "<int> Maximum number of passengers that each vehicle can carry simultaneously.", |
| "maximum_ride_time": "<int> Maximum time any user may spend aboard a vehicle from pickup to drop-off.", |
| "num_nodes": "<int> Total number of nodes in the service network, equal to 2 * num_users + 2 (one pickup and one drop-off per user, plus origin and destination depots).", |
| "nodes": [ |
| { |
| "node_id": "<int> Unique identifier for this node, ranging from 0 (origin depot) to num_nodes - 1 (destination depot).", |
| "x": "<float> Horizontal coordinate of this node's location.", |
| "y": "<float> Vertical coordinate of this node's location.", |
| "earliest_time": "<float> Earliest time at which service may begin at this node.", |
| "latest_time": "<float> Latest time at which service may begin at this node.", |
| "service_duration": "<float> Time required to board or alight passengers at this node.", |
| "load": "<int> Change in vehicle occupancy when visiting this node (positive at pickups, negative at drop-offs, zero at depots).", |
| "node_type": "<str> Role of this node: 'origin_depot', 'destination_depot', 'pickup', or 'dropoff'.", |
| "user_id": "<int> Identifier of the user associated with this pickup or drop-off node (present only for pickup and dropoff nodes).", |
| "paired_node": "<int> Node identifier of the corresponding drop-off node for a pickup, or the corresponding pickup node for a drop-off (present only for pickup and dropoff nodes).", |
| "request_type": "<str> Whether this user's trip is 'outbound' (from home to a destination) or 'inbound' (from an origin back home) (present only for pickup and dropoff nodes)." |
| } |
| ], |
| "maximum_route_duration": "<int> Maximum total duration of any single vehicle's route from depot departure to depot return." |
| } |
