I saw this when i was living in OZ and i was very impressed. we have a couple of toll roads in the dublin area. all 3 relate to bridges. the busiest one is on the M50 ring road (well it will be a ring road if it is ever finished) and the toll booths are about 100m from the bridge, 7 lanes into 3 on the bridge, it causes most of the traffic congestion on the motorway in the morning. we need a system like the sydney on where by you drive at a normal speed and the system does all the work. i have a transponder but i still have to slow to 5mph to go through the barriers so it doesn't really make that much difference to traffic flow.
Slán
~M

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>Sounds like they tried to solve a simple problem with a complex solution, the tollways in australia have electronic readers and you just stick a little transponder to your windscreen and it beeps as you drive through the toll plaza at 90Km/h - Trucks can use the same technology - Why would the german government try to use satelites to solve a problem that a $30 piece of electronics seems to do a good job with. In fact I am pretty sure that the reader on my car is made in Germany (the company who makes them at least - they are probably made in china), so surely the technology is available in germany and the rest of europe?