tnc trip table structure

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tnc trip table structure#

The TNC_Trip table stores all trips made by shared mobility vehicles - referred to here as TNC vehicles. Each record in the table includes a leg of travel - either pickup, dropoff, charging, or repositioning. Several records together for a specific vehicle may form a tour, meaning the vehicle was continuously in operation from one trip to the next, without a break.

Table Structure#

Field

Type

NULL allowed

Default Value

Foreign key

Description

TNC_trip_id_int*

INTEGER

NO

Integerized trip ID for each TNC_Trip record

TNC_trip_id

INTEGER

NO

Not used

path

INTEGER

NO

-1

Path ID is not -1 if there exists Path-related information in the Path table (in H5) referenced by this value (foreign key to the Path table)

path_multimodal

INTEGER

YES

All TNC trips are on auto network, so no multimodal travel information is logged Always NULL

tour

INTEGER

NO

0

Counter for tours that are formed from a series of continuous trips undertaken by the TNC vehicle

start

REAL

YES

0

Time at which the TNC vehicle started its trip (units: seconds)

end

REAL

YES

0

Time at which the TNC vehicle ended its trip (units: seconds)

duration

REAL

YES

0

Not used

origin

INTEGER

NO

0

Origin location of the trip (foreign key to the Location table)

destination

INTEGER

NO

0

Destination location of the trip (foreign key to the Location table)

purpose

INTEGER

NO

0

Not used

mode

INTEGER

NO

0

The mode of the trip should always be 9: “TAXI/TNC”Values at mode.

type

INTEGER

NO

0

Trip type as defined in , should always be ABMValues at type.

vehicle

INTEGER

YES

Vehicle(vehicle)

TNC vehicle ID associated with the trip (foreign key to the Vehicle table)

passengers

INTEGER

NO

0

Number of passengers on board the TNC vehicle during the execution of the trip recorded

travel_distance

REAL

YES

0

Distance traveled during the trip (units: meters)

skim_travel_time

REAL

YES

0

Travel time from the skim table for comparison with execution (units: seconds)

routed_travel_time

REAL

YES

0

Travel time from the router for comparison with execution (units: seconds)

request_time

REAL

YES

0

Simulation time when the request being served actually requested that trip (units: seconds)

init_status

INTEGER

NO

0

TNC status denoting what operation was being done when trip started. Allowable values are: Pickup (-1), Dropoff (-2), Charging (-3), and Repositioning (-4)

final_status

INTEGER

NO

0

TNC status denoting what operation was actually done when trip ended because of mid-trip detours. Allowable values are: Pickup (-1), Dropoff (-2), Charging (-3), and Repositioning (-4)

init_battery

REAL

YES

0

If electric vehicle, battery state of charge at the beginning of the trip (units: %)

final_battery

REAL

YES

0

If electric vehicle, battery state of charge at the end of the trip (units: %)

fare

REAL

YES

0

Fare collected from executing this leg of the trip - Not to be used - Use fare from TNC_Request instead.

person

INTEGER

YES

Person(person)

If request is related to a person, then the person ID is logged (foreign key to the Person table)

request

INTEGER

NO

0

Request object which tracks additional details of the request that generated this trip (foreign key to the TNC_Request table)

toll

REAL

NO

0.0

Toll paid in executing the trip (units: $USD)

(* - Primary key)

The SQL statement for table and index creation is below.

CREATE TABLE "TNC_Trip" (
  "TNC_trip_id_int" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
  "TNC_trip_id" INTEGER NOT NULL,
  "path" INTEGER NOT NULL DEFAULT -1,
  "path_multimodal" INTEGER NULL,
  "tour" INTEGER NOT NULL DEFAULT 0,
  "start" REAL NULL DEFAULT 0,
  "end" REAL NULL DEFAULT 0,
  "duration" REAL NULL DEFAULT 0,
  "origin" INTEGER NOT NULL DEFAULT 0,
  "destination" INTEGER NOT NULL DEFAULT 0,
  "purpose" INTEGER NOT NULL DEFAULT 0,
  "mode" INTEGER NOT NULL DEFAULT 0,
  "type" INTEGER NOT NULL DEFAULT 0,
  "vehicle" INTEGER NULL,
  "passengers" INTEGER NOT NULL DEFAULT 0,
  "travel_distance" REAL NULL DEFAULT 0,
  "skim_travel_time" REAL NULL DEFAULT 0,
  "routed_travel_time" REAL NULL DEFAULT 0,
  "request_time" REAL NULL DEFAULT 0,
  "init_status" INTEGER NOT NULL DEFAULT 0,
  "final_status" INTEGER NOT NULL DEFAULT 0,
  "init_battery" REAL NULL DEFAULT 0,
  "final_battery" REAL NULL DEFAULT 0,
  "fare" REAL NULL DEFAULT 0,
  "person" INTEGER NULL,
  "request" INTEGER NOT NULL DEFAULT 0,
  "toll" REAL NOT NULL DEFAULT 0.0,

  CONSTRAINT "vehicle_fk"
    FOREIGN KEY ("vehicle")
    REFERENCES "Vehicle" ("vehicle_id")
    DEFERRABLE INITIALLY DEFERRED,
  CONSTRAINT "person_fk"
    FOREIGN KEY ("person")
    REFERENCES "Person" ("person")
    DEFERRABLE INITIALLY DEFERRED)

Enums#

The following enums are used in this table.

mode#

Enum Values#

Value

Description

0

SOV

1

AUTO_NEST

2

HOV

3

TRUCK

4

BUS

5

RAIL

6

NONMOTORIZED_NEST

7

BICYCLE

8

WALK

9

TAXI

10

SCHOOLBUS

11

PARK_AND_RIDE

12

KISS_AND_RIDE

13

PARK_AND_RAIL

14

KISS_AND_RAIL

15

TNC_AND_RIDE

17

MD_TRUCK

18

HD_TRUCK

19

BPLATE

20

LD_TRUCK

21

RAIL_NEST

22

BUS40

23

BUS60

24

PNR_BIKE_NEST

25

RIDE_AND_UNPARK

26

RIDE_AND_REKISS

27

RAIL_AND_UNPARK

28

RAIL_AND_REKISS

29

MICROM

30

MICROM_NODOCK

31

MICROM_AND_TRANSIT

32

MICROM_NODOCK_AND_TRANSIT

33

ODDELIVERY

999

FAIL_MODE

1000

FAIL_ROUTE

1001

FAIL_REROUTE

1002

FAIL_UNPARK

1003

FAIL_UNPARK2

1004

FAIL_MODE1

1005

FAIL_MODE2

1006

FAIL_MODE3

1007

FAIL_ROUTE_ACTIVE

1008

FAIL_ROUTE_WALK_AND_TRANSIT

1009

FAIL_ROUTE_DRIVE_TO_TRANSIT

1010

FAIL_ROUTE_DRIVE_FROM_TRANSIT

1011

FAIL_ROUTE_TNC_AND_TRANSIT

1012

FAIL_ROUTE_TNC

1013

FAIL_ROUTE_SOV

1014

FAIL_ROUTE_MICROMOBILITY

1015

NO_MOVE

9999

UNSIMULATED

type#

Enum Values#

Value

Description

-1

NULLTRIP

11

ABM

22

EXTERNAL

23

EXTERNAL_TNC

24

EXTERNAL_FREIGHT

33

TNC

34

FREIGHT

44

FIXED

55

TRANSIT

99

UNSIMULATED
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