You know those LED signs at bus stops that tell you the next 36B will be along in 12 minutes?
Well, today I learned that bus location information is generated on the bus, in real time, using GPS/GPRS, and sent, via a special type of SIM card, to a central control centre.
The central control centre analyses the bus location and then calculates that against the known speed of traffic, and the calculated arrival time is then sent to each bus stop along the route.
The cynical me had always assumed that the displays were merely a digital reproduction of the estimated time of arrival, based on the bus timetable.
Of course, the system is only as good as the availability of the GPS/GPRS signal.
Which, sadly, in parts of central Oxford is nil.
But still, it’s a great use of tech.