Engineers working on gear safety emphasize that the advantages of rack and pinion gear systems are not emphasized enough and the necessary attention is not given to this issue. At this point, they focus on why tried and tested technology should not be overlooked. In addition, with the use of laser measurement techniques, the system can be calibrated despite repeated machine errors (10-25 micron precision). When pinion faults are unacceptably large, a straight corner/edge or disc system compatible with rack and pinion gears is used. The advantages of rack and pinion gear are not limited to the benefits of the system. Cost-effective "light open loop" control system can be designed using rack and pinion gear system for attention demanding driving. Although it is not easy to manufacture racks to high standards, it covers a process that has been gradually developed over the last 30 years by gear design engineers using helical gear rack form and other pantent techniques. Module: 1- 1.25 - 1.5 - 2 - 2.5 - 3 - 4 - 5 - 6 - 8 - 10 -12