Whats the deal with Private Mobile Radio (PMR)?
Typically, only cities and other government agencies own and operate their own private radio networks. Depending on the technology, AVL may or may not be supported. For instance, a city with a 10 channel 800Mhz radio system already loaded to capacity with the existing voice traffic will find it very difficult to squeeze additional bandwidth for AVL. However, an agency with frequencies that can be dedicated to AVL may be in good shape. The main advantage of using Private Mobile Radio is that customers can leverage the money already spend on their radio network. The disadvantages usually relate to AVL performance. PMR based AVL systems are very difficult to scale up to hundreds of vehicles unless the customer can live with slow update rates.
