The Grade Control Systems family of conventional and 3D grading solutions is flexible enough to accommodate an entire fleet, says Trimble. Controller Area Network harnesses allow operators to move sensors from machine to machine. The system's GCS900 3D solution uses design data in the cab of the machine for two-way data transfer in real-time between the machine and office. Users in the office can make design changes and updates and then import them into data-preparation software. 3D data allows the engineer to quality check the design before uploading it to the machine. Once the in-cab computer receives the updated data, the operator selects the new information and the design change is implemented in minutes. Estimated list price: $10,000 to $80,000.