Your car has broken down and you're telephoning the AA for help. You m
ay be doing it from a draughty phone box, or with a mobile phone from
the comfort of your driving seat. Either way, you'll probably visualis
e the controller at the other end of the phone punching some keys on a
computer and identifying your location on screen on a digital map; If
so, you're more or less right. The AA was in the forefront of the mov
e to use on-screen mapping for this quintessential command and control
application, and has been doing so throughout the 1990s. Computers ha
ve introduced a highly interactive new dimension to the task of managi
ng the rescue service.