According to this website:
http://www.highprogrammer.com/alan/numbers/dl_us_shared.html
Overflow
Looking at this, may become clear that it is possible for two people
with similar names to get the exact same driver's license number. For
example, if "Joshua William Smith" and "Jack Wayne Snoddy" were born
on the same day, they'll get the same Illinois drive's license number.
This is solved with "overflow" numbers, a simple sequential number can
be appended to each duplicate number to resolve the confusion.
Wisconsin prints the overflow number on your license. As a result, the
last two digits of your Wisconsin license number represent the number
of people who had the same license number as you (ignoring the last
two digits), when you got your license.
Illinois may do this, but if they do the information is not on your
driver's license. This means that if Joshua William Smith is wanted by
police and his driver's license number is flagged as such, Jack Wayne
Snoddy may be briefly detained while the police check their records to
sort out the shared number. I have been told that Illinois state
databases actually include a two or three digit number to distinguish
between different people with the same license.
T.G. has contacted me to let me know that Florida adds one extra digit
to the end. T.G. has only heard of the last digit being a 0, but it
may well be another overflow digit, meaning that one should expect to
see other numbers there as well.
Maybe the last digit being an 8 means that there are at least 7 other
people have exactly the same license number as you except for the last
digit. |