The Flex4 Control system, from Dickey-john Corporation, was designed with a user-friendly operator interface for use during all seasons. The four-channel system offers an auxiliary control channel for either granular or liquid control allowing quick changeover from de-icing to anti-icing applications and eliminating the time required to get out of the vehicle and change hydraulic hose connections. A CAN BUS design utilizes a remote-mount control ECU providing a platform that supports customization for future capability expansion. An optional video camera that displays rear view of the truck allows monitoring of material dispensed and avoidance of potential accidents.