This SAE standard applies to self-propelled driver operated sweepers and scrubbers as defined in SAE J2130. Purpose The purpose of this document is to establish the basic requirements associated with controls and displays for dual position driving controls as depicted in a typical installation shown in Figure 1. The control layout illustrated being of a conventional installation as associated with a normal on-road vehicle having a steering wheel to steer the machine and foot pedals to control the speed and braking functions. The document elaborates the requirements for an originally built machine with two driving positions but also where a proprietary commercial truck chassis is converted from a single driving position, it also advises recommendations in design, construction and safety related elements. In the case where National Regulations pertain to the design and performance of driving control systems as depicted, then these regulations take precedent over the recommendations in this document.