08 March 2009

Roundabout routing


I could fill my blog with these. Screenshots of the ridiculous routings that the despatch system GPS advises.

This was one afternoon last week, and I was heading along Constitution Avenue (my car indicated by the red circle/black arrow icon) when I got a job, with the pickup point on London Circuit (yellow circle marked "P1"). London Circuit, as the name implies, is an octagonal street, and as I didn’t recognise the street number and didn’t want to go the long way around, I hit the “Navigate to Pickup” button. It usually gets the pickup spot correct, because it knows all the street numbers.

But it likewise usually makes a hash of the route. The above is a typical example. I’ve moved further down Constitution Avenue from the point where I asked it to calculate a route, but it wanted me to turn left down Coranderrk Street, go once around the roundabout on Parkes Way, come back onto Constitution Avenue, make a right turn onto Allara, a left onto Bunda, follow that around and then make an illegal trip through the bus interchange before finally turning left onto London.

Not surprisingly, I ignored this advice, proceeded straight down Constitution Avenue to the end and made the right onto London, where I u-turned to stop in the loading zone at the pickup point. About a quarter of the recommended distance. Sometimes I wonder if the advice isn’t aimed at maximising the journey, rather than minimising it.

That’s Ringbear, peeping over my screen above. He was telling me to bear right.

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