Thanks sara3 for your support & Damian666 will now follow your advice which I think could have been given a little more politely. I spend most evenings on Google searching for answers but missed that one so went to Answerbank which I thought was for seeking help, & usually is given quite cheerfully.
With this question in particular I convinced myself it was a misprint and googled road numbers for ages LOL that`ll learn me, but as you say I got it in the end.