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The problem with PDA based camera detection is that they can't give you the average speed warning on SPEC's cameras that a dedicated device produce. Remember SPEC's camera's are the future, you can't see them, they monitor average speed between 2 or more points, they OCR your no. plate and issue a ticket automatically. They're predominantly on motorways (M6 currently & upper thames street in London)) where most people will safely speed oblivious to the fact that they could accumulate 12 points in one journey doing 85mph on an empty motorway. No flash so you've no idea you've been done. No film so they are always live.
The RA2 warns you of the camera, then bleeps every 10sec while you are being monitored and also shows you your average speed while being monitored. PDA systems can only warn you of the camera, which is ok as long as you are confident you can stay under the limit until you are out of range.
I would also have a problem relying on a freebie database for licence saving info. It's really only a good choice if you already have a PDA/SatNav setup in the car.
As Steeeve already stated they can't ban RA or similar as they would then have to ban all GPS based systems including SatNav.
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Not true about PDA systems not being able to warn you and monitor your average speed for the new cameras!
I am currently using TomTom3 on a iPAQ 2210 and I use the software called Checkpoint and POIplace. All the facilities are there and they are called Section cameras (Speed zones). The settings range from 20 to 130 in increments of 10 (kph or mph). In each speed setting you can give it a time for the first warning before the section starts, then the speed setting and then the last warning. The last tab in each one allows you to repeat the speed warning in the range of 5 to 60 seconds. Then the last tab allows you to specify the "stop monitoring the section after" 1 minute in increments up to 30 minutes.
Here is the URL for further information:
http://checkpoint.oabsoftware.nl/
Look under Manual > settings > Section warnings.
I understand these cameras are in use in Holland and this is where the software comes from.
regards