Issued to trucks operating in interstate
service. Typically, these are tractor trucks pulling large
semi-trailers. Registration fees are based on miles driven within New
Mexico as a proportion of the total miles driven during the year. Plates
dating from the 1960s with the PR (prorate) prefix are related to later
plates bearing the prefix IR, those with the legend “APPORTIONED” and
plates bearing both “APPORTIONED” and the IR prefix.
As far as is known, 1975 was the first year that New Mexico plates
bearing the IR prefix were issued, and in fact they are described in a
1975 DMV publication, but not in publications from any earlier years.
New Mexico's first plates bearing the APPORTIONED designation were
issued in 1990, with 1991 expiration dates. The 1992 plate shown below,
therefore, is a very early example of this type, having been issued in
the second year of their use.
Although New Mexico switched to a staggered registration system in April
1982, Apportioned plates were among just a very few types which retained
the annual December expiration date. Apportioned plates were finally
changed to the staggered system in about 2001-2002.
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| IR tags are also known as “reciprocity” plates and the IR prefix is
actually an abbreviation for IRP, which is the USA-Canada International
Registration Plan. IR plates are used for trucks operating interstate
within the U.S., as well as those traveling cross-border into the
Canadian provinces. |
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| Apportioned plates are known to have been issued
in at least the years 1996-2000, inclusive, with unique validation
stickers containing serial numbers bearing a “CC” prefix. The “CC” is no
doubt significant but its meaning is not known with certainty. Possible
meanings include "Commercial Carrier," “Common Carrier” and “Corporation Commission.” |
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This plate, WD-IR2766, by all appearances a combination
of the Weight Distance and International Registration Plan types, has
not been positively identified as to its purpose. It is not
described in the MVD publication New Mexico License Plates 1984
Edition, though that publication does
show the regular 1983 Weight Distance plate with the embossed “83.”
If you have any information on this type of plate, and especially if you
have documentation on it, please contact
us. |
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| Photo Credits: 2008 IRG8920 courtesy Jim
Moini. All others by Bill Johnston. |
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