0 minutes
 +  3 minutes
+  6 minutes
+  9 minutes
+  12 minutes
+  15 minutes
Requests a trip
Accepts, modifies or rejects the trip
Arrives at pick up location
Boards vehicle
Alights vehicle
Trip information input into the system
Planned trip pushed to customer (option for private pay / taxi)
Confirmed trip sent to scheduling system
Manifest updated for driver on vehicle
Arrives at pick up location
Travels to destination
Arrives at destination
Vehicle location information available every 30 seconds
Manifest sent to driver on vehicle
Searches for available trip options; Determines routing, arrival, and departure times
Trip confirmed in system; Manifests updated; Trip sent to vehicle
Time
START
END
Assumptions:  Vehicles have on-board systems including CAD/AVL; Mobile Data Terminals; Data Communications (Voice for back up);  Vehicle operates anywhere (demand response, or cab service)  Shared ride or not?