Quite right I ll try to check Eric Partridge s 1936 Dictionary of Slang when I have the chance but all my books are in store It has kinda fallen out of fashion because deliberately in the UK they have been getting rid of these extremely dangerous roads as I put in the stub I think they changed the British A507 Baldock to Woburn road from a my side your side suicide road to having two very wide lanes you can still see the old road markings for the three lanes because the UK has been cutting back a lot on road maintenance out of short term economical reasons that make no damned sense in the long term but still charge me 250 a year for my road fund licence I m with you it is hard to source reliably Perhaps we should try at WikiProject Roads But then on the other hand I tried about four years ago to edit left and right hand traffic and was pretty much always undone reverted because I wanted to change from always saying right hand drive meaning left hand traffic and left hand drive to right hand traffic which I think is confusing to readers but got nowhere with that one