Need suggestions about which technology is best to use to create a traffic control and driver guidance application with reference to cost, accuracy and convenience? e.g. GSM, GPS, Infrared, UMTS or some other one? Need immediate responses plz with references

> Need immediate responses plz with references
Sure, anything else you would like?

This perhaps ?


Governments spend millions trying to answer that question, and generally end up making a pig's ear out of it.

Did you expect you could just roll into a forum and get an answer just like that?

This answer fits into the "fast / cheap / good - pick two" framework.
You chose "fast and cheap".

commented: Plzz, plzz sir is this like artificial passenger?? (er, well it looks like it's a bit different) :D +2

and the government chooses slow and expensive, and still doesn't get "good" :)

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