PTRLR3VIN

Purpose

PTRLR3VIN records the VINs of up to three trailers attached to a combination vehicle. It does not include the VIN of the power unit (tractor).

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Format

• Three sets of 17 alphanumeric characters

• SAS fields: Vehicle.TRLR1VIN, Vehicle.TRLR2VIN, Vehicle.TRLR3VIN, PTRLR1VIN, PTRLT2VIN, PTRLT3VIN

• Left-justified, no hyphens or periods included

• VIN must follow 49 CFR Part 565 standards

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Element Codes & Meanings

Code	Meaning
00000000000000000	No VIN required (not a road-use trailer)
77777777777777777	No trailing units
88888888888888888	VIN not reported
99999999999999999	VIN reported as unknown
*	Character missing or not decipherable in a VIN
Alphanumeric string	Actual VIN (when known and valid)

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Data Entry Logic

• VIN fields auto-populate with 7s if VEHICLE TRAILING = 0, 5, 6, or 9

• If VEHICLE TRAILING = 1, one VIN is recorded, others get 7s

• If VIN is unknown or missing, use 8s (Not Reported)

• VINs shorter than 17 characters:

  • Enter as-is if legitimate (e.g., for vintage/custom vehicles)

  • Use * to fill missing characters if appropriate

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Special Cases

• Ford VINs (1950–1980) with a script “f” at start/end: omit the “f”

• Hyphens/periods in VINs: omit them

• VINs with check digit errors can be overridden with justification

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Validation & Error Checks

The VIN must match expected character positions and formats. A variety of edit checks ensure:

• VIN consistency with the number of trailers

• VIN structure complies with CFR rules

• GVWR and VIN codes are compatible

For example:

• VP79: If VEHICLE TRAILING = 1, two VIN fields must equal 7s

• VP75: If VIN = 0s, GVWR must be 00

• 904P/905P: VIN characters must follow allowed alphanumeric ranges