1993 Oldsmobile Silhouette Owner's Manual - Page 144

KEEP RIGHT LEFT OR THROUGH RIGHT TURN ONLY Shape of Road Signs (CONT.) Rectangular (square or oblong) signs show speed limits, parking regulations, give directions, and such informationas distances to cities. Symbols on Road Signs Trait2 Lights or There are many international road signs We're all familiar with traffic lights stop lights. Often green arrows are being in use today. used in the lights for improvedtraffic control. On some multilaneroads, green arrows light up, indicating that traffic in one or more lanes canmove or make a turn. Green arrows don't mean no "go matter what." You'll still need to proceed with caution, yielding the right of way to pedestrians and sometimes to other vehicles. Some traffic lights also use red arrows to signify that you must stop before turning on red. NO U TURN NO PARKING NO BICYCLES 142 The basic message of many of these signs is in pictures or graphic symbols. A picture within a circle with a diagonal line across it shows what not to do.