Vehicle Identification Number (VIN): |
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History of the VINVehicle manufacturers originally had no standard method for identifying vehicle production models. In the mid 1960's manufacturers began to include model year with a production serial number but the identification numbers varied in length. In the early 1970's a 10 digit VIN became standard. The National Highway Traffic Safety Administration (NHTSA) has a legislative mandate under Title 49 of the United States Code, Chapter 301, Motor Vehicle Safety, to issue Federal Motor Vehicle Safety Standards (FMVSS) and Regulations to which manufacturers of motor vehicle and equipment items must conform and certify compliance. In 1967 FMVSS 209 was the first safety standard, and a few more followed in 1968.The VIN was originally described as part of the International Organization for Standardization (ISO) 3779 in 1977; This is an international standard of recommendations rather than requirements. In order to create more compulsory and consistent standards (compatible to ISO 3779), FMVSS No. 115 was issued and specified the requirements for the VIN. In 1978, a 30 year, 17 character VIN became a standard. In late 1980, NHTSA regulations required all 1981 vehicles to be sold with a 17 character VIN. In 1983, parts of FMVSS No. 115 were deleted and re-issued under a new Part 565. In 1996, the rest of FMVSS No. 115 was moved to Part 565 to form a single regulation dealing with the VIN number. The Society of Automotive Engineers (SAE) is contracted by NHTSA to assign the first three characters of the VIN, called the World Manufacturer Identifier (WMI), to on road and some off road recreational vehicles. ISO 3780 first described the WMI.
For model years 1981 to present, the VIN is composed of 17 alphanumeric values. The letters I,O, Q are prohibited from any VIN position while some other positions have additional prohibited values. As an example: The tenth position of the VIN represents the Model Year and does not permit the use of the characters U and Z, as well as the numeric zero (0). This leaves the number of available alphanumcer values as 30 (26 character alphabet minus 5 prohibited chacters, plus the 10 numeric values minus the 1 prohibited value.) This produces a 30 year cycle of values for the Model Year. The VIN is comprised of three sections:
* Manufacturers who build less than 500 vehicles a year utilize a shared WMI and are distinctively identified in combination with positions 12-14. The European Union follows the ISO, a non-compulsory standard (i.e.: Year and plant are optional). The North American Model is more stringent and does not follow the ISO sectional names and considers the check digit as a separate section. The ISO and the CFR may be compared regarding the VIN as follows:
CMV ID:The following comments pertain mostly to the use of CMV ID in relation to the most common large trucks and buses in federally reportable crash records as found in the Motor Carrier Management Information System (MCMIS).
It is important to verify two issues with the VIN results: Verify that the expected manufacturer is displayed and that the check digit is valid. The WMI: The first three positions of the VIN make up the World Manufacturer Identifier or the WMI. These three positions reflect the manufacturer and the country of manufacture. CMV ID relies on a correct WMI to resolve the VIN. Check to see that the expected manufacturer name is display. CMV ID will check the WMI for prohibited characters and offer an alternative WMI for the most common WMI mistakes. As well, there is a WMI reverse lookup. Example: Enter "1FT11111111111111" and CMV ID will resolve the WMI (1FT) as "1 - United States ; FT - FORD TRUCK". If you input a prohibited character such as "IFT11111111111111", CMV ID will resolve the WMI (IFT) as "IFT not in database --> (1FT = Ford)". An "I" is a prohibited character but is also often a typo for a numeric "1", particularly at the first position. The most common WMI typos will resolve with a recommendation. In some cases, a character may be permitted but not expected and CMV ID will resolve the WMI with a recommendation. For example: Enter "LFT11111111111111", CMV ID will resolve the WMI (LFT) as "LFT not in database --> (1FT = Ford)". In both cases above, CMV ID returns what could be the WMI you are attempting to enter. If the vehicle is a Ford Truck, then enter the WMI portion as "1FT". The most common WMI first positions are as follows:
The WMI Reverse Lookup: There is a WMI button which when clicked will show all the Manufacturers currently in the database. If you select Ford, then you will see all the WMIs associated to Ford that are currently in the database. In this way, you can check the WMI portion of your VIN to the available WMIs in the database. CMV ID can only return information on WMIs in the database. If you have a WMI which is not in the database you can submit the VIN via email for consideration to be added to the database. The Check Digit: The ninth position of the VIN is a calculated value based on the other 16 alphanumeric values. The calculated value is based on a weighting algorithm by VIN position. The result of the check digit can ONLY be a numeric 0-9 or letter "X". When the check digit does not validate in CMV ID, a message will display as "Check Digit Invalid: Review VIN". If a character is entered which is prohibited (ie: other than 0-9,X), then CMV ID will return a message of "Check Digit Not Allowed: (G); Valid=0-9,X" , where "G" is an example of a value entered for the VIN's ninth digit. A check digit which is invalid implies that one of the evaluated 16 alphanumeric values was entered incorrectly. In very rare cases, the check digit may be the wrong value originally as assigned by the manufacturer.
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