1. A vehicular navigation system updating system for updating vehicular navigation systems in vehicles, comprising: at least one condition detector that automatically detects presence of an object or condition at a specific location and for which presence of the object or condition at the specific location affects movement of vehicles on a roadway, said at least one condition detector being configured to detect the presence of the object or condition at the specific location without requiring manual entry of data about the object or condition at the specific location, said at least one condition detector being situated on a vehicle; a first communications system coupled to said at least one condition detector that wirelessly transmits a signal, data or information about the presence of the object or condition at the specific location automatically detected by said at least one condition detector, said first communications system being situated on the same vehicle as said at least one condition detector; a second communications system that wirelessly receives transmission of the signal, data or information about the detected presence of the object or condition at the specific location from said first communications system; and a processor coupled to said second communications system and situated at a site remote from said at least one condition detector and that is configured to generate an update for a map provided by vehicular navigation systems based on the detected presence of the object or condition at the specific location and direct communication of the generated map update to at least one vehicle in a vicinity of the specific location at which said at least one condition detector detected the presence of the object or condition, whereby the vehicular navigation system of the at least one vehicle uses the map with the map update to display or otherwise indicate the presence of the object or condition at the specific location.