MABCU is a compilation of various traffic-related data, as published by the Department for Transport (DfT).
What does MABCU mean?
It doesn't mean anything. It's an acronym generated from the five different categories of roads in the UK:
How do you pronounce MABCU?
That's entirely up to you, but I pronounce it "mab-koo".
You can contact the administrator of this website by email at 'admin{at}mabcu.uk' (making the obvious substitution to turn that into a valid email address).
For those that care abut such things, this site is built on an open source platform using Linux, Apache, PHP and MariaDB. It runs entirely on recycled electrons. No animals were harmed in the making of this website, but large numbers of coffee beans gave their lives for the cause.