Buckinghamshire CC ANPR cameras

[Roland Perry]

In article 
<CAJkBBXVsZSC9Wun8XCz_UqpKePe9TDrBNVnGNBOF3aacC4RiDA at mail.gmail.com>, 
John Wilson <tugwilson at gmail.com> writes
>It would be interesting to know if the DVLA manages the numbers it
>issues to minimise the number of collisions. The know all the current
>registration numbers so could suppress new numbers which would have a
>high collision rate.

Given that the "replacements" are also the sort of characters that 
humans might confuse, reducing the number of collisions would seem to be 
useful, or are more of the collisions caused by 'weakness' of the hash, 
rather than two numberplates having the same pre-hash text after the 
replacement function has been run?
-- 
Roland Perry