I recently traveled from Ottawa to Toronto and was listening to the OPP the whole way. AT one point an officer in the eastern end of zone 1 informed the dispatcher he was switching his radio over to zone 2. From this I gather than the patrol car radios have the capability to function in more than zone. This raises some questions. Do the radios have all the TGIDs for all zones? Is there something special (regarding the radio) the officer must do to switch zones or does the radio automatically switch zones based on which TG is selected?