1993 Buick Roadmaster Owner's Manual - Page 158
1993 Buick Roadmaster Manual
Page 158 highlights
A TRIANGULAR sign also is used .on two-lane: roads to: indicate a NO PASSING ZONE. This s i p will be QII the left &de of thegmadway. Symbols on .Road Signs r There are many international road signs in use today. JJ J -L KEEP RIOHT .?? ) -L . ONLY f ' LEFT OR THROUGH RIGHT- TURN ONLY RECTANGULAR (square .or oblong) signs show :speed ' limits, parking regtllaticjnfi, give directions, and .such information as distances- cities. to I