Caimore CM520-87X series wireless router can be used for traffic controlling, to provide drivers with real-time information regarding things like traffic conditions, accidents, changes to speed limits and construction zones. For more details, see the attachment file, also welcome to contact us! :)For more details, see the attachment file, also welcome to contact us! Contact person: Cynthia Wang Skype: caimoremodemWhatsapp:+86-13720875034