Shared Mobility Operator File

The fleet model file defines the operation plan of the tnc operator(s) in the region. This includes each operator’s strategy and parameters that control operation. The current file input allows users to set the number of operators that serve the region, spatial restrictions on where the operate, and what control strategies they adhere to. Each operator is able to use a collection of existing strategies defined by a user-specified name such as ‘Strat_1’, in the example below. A separate section under this user-specified strategy name needs to exist in the input file.

A strategy collection supports the definition of the following controls:

• init_vehicle_state_strategy

• assignment_strategy

• fare_strategy

• reposition_strategy

• charging_strategy

• maintenance_strategy

• parking_strategy

If control strategies are not defined for any of the above supported strategies, the default strategy provided by POLARIS will be assumed for the operator that uses this user-defined ‘Strat_1’ collection.

An example input for the shared fleet model looks like the following:

{
	"TNC_Fleet_Model": 
	{
		"NO_OF_OPERATORS": 2,
		"OP_1": "Operator_1",
		"OP_2": "Operator_2"
	},
	"Operator_1": 
	{
		"TNC_FLEET_SIZE": 300,
		"delivery_type": "person",
		"TNC_MAX_WAIT_TIME": 10.0,
		"TNC_WAIT_ASSIGNMENT_TIME": 10.0,
		"TNC_MAX_SEATED_CAPACITY": 4,
		"TNC_LOGGING_INTERVAL": 15,

		"strategy_name": "Strat_1",

		"ZONE_BASED_ASSIGNMENT": true,

		"geofence_flag": false,
		"geofence_zonebased_flag": true,
		"geofence_areatype_limit": 2,
		"geofence_exclusion_zones": [22,25,293,296,297],
		"EV_INITIAL_SoC_RANGE_FLAG": true,
		"EV_INIT_SoC_MEAN": 40,
		"EV_INIT_SoC_SD": 2,

		"force_tnc_over_auto": false,

		"use_fmlm": true,
		"bus_fmlm_ratio": 1.0
	},
	"Strat_1": 
	{
		"DRS_FLAG": true,
		"DRS_MAX_ALLOWABLE_DELAY_SECONDS": 900,
		"DRS_MAX_PERC_DELAY": 25.0,  
		"CUTOFF_BATTERY_LEVEL": 90.0,
		"MIN_EV_SoC": 15.0,
		
		"directionality_threshold_degrees": 10,
		"repositioning_flag": false,
		"zones_multiplier": 0.25,
		"demand_window_size": 0.5,
		"time_tradeoff": 5000,
		"alpha": 1.0,
		
		"EV_CHARGE_IF_IDLE_FLAG": false,
		"EV_CHARGE_IF_IDLE_MINUTES": 15,
		"EV_SERVE_IF_CHARGING_FLAG": false,
		"EV_SERVE_IF_CHARGING_SoC": 60.0
	},

	"Strat_2": 
	{
		"assignment_strategy": "c2c",
		
		"DRS_FLAG": false,
		"DRS_MAX_ALLOWABLE_DELAY_SECONDS": 900,
		"DRS_MAX_PERC_DELAY": 25.0,  
		"CUTOFF_BATTERY_LEVEL": 90.0,
		"MIN_EV_SoC": 15.0,
		
		"repositioning_flag": false,
		"zones_multiplier": 0.25,
		"demand_window_size": 0.5,
		"time_tradeoff": 5000,
		"alpha": 1.0,
		
		"EV_CHARGE_IF_IDLE_FLAG": false,
		"EV_CHARGE_IF_IDLE_MINUTES": 15,
		"EV_SERVE_IF_CHARGING_FLAG": false,
		"EV_SERVE_IF_CHARGING_SoC": 60.0
	},
	"Operator_2": 
	{
		"TNC_FLEET_SIZE": 10,
		"delivery_type": "person",
		"TNC_MAX_WAIT_TIME": 10.0,
		"TNC_MAX_SEATED_CAPACITY": 4,
		"TNC_LOGGING_INTERVAL": 15,

		"strategy_name": "Strat_2",

		"ZONE_BASED_ASSIGNMENT": true,

		"geofence_flag": false,
		"geofence_zonebased_flag": false,
		"geofence_areatype_limit": 2,
		"geofence_inclusion_zones": [11],

		"force_tnc_over_auto": false,

		"use_fmlm": false
	}
}

For a full-listing of TNC-related parameters, visit the Parameters page.