TheROADrule USATONS is a quick reference tool that identifies the most common U.S. aids to navigation, rules of the road, and maneuvering and warning signals for U.S. waters. ROADrule takes loads of information and makes it understandable. Whether in a classroom or at the helm, critical decisions can be made quickly and with confidence with the aide of ROADrule.
The ROADrule design is similar to a slide-rule. (Other Versions of ROADRule are also available for European Inland Canals and International Waters). It displays 38 navigation aid definitions, 12 Rules of the Road, and identifies bridge lighting and Intracoastal Waterway markings.It also has various buoyage markers drawn in color to match the chart symbol. The ROADrule is stored in a vinyl sleeve and fits nicely in a chart table.