Accuracy: Submeter or decimeter

Components: QuickTrax, SmartTrax controller, RGL 600ic lightbar, DGPS receiver (submeter system); QuickTrax, SmartTrax controller, Phoenix 300 GPS receiver, Raven DGPS enhancer and RGL 600ic lightbar (decimeter system)

Compatibility: Kits are available for many models of tractors and sprayers.

Price: Submeter, $7,400; decimeter, $15,780