1993 Buick Riviera Owner's Manual - Page 143

h c Y A Y 1 Y U ' x Y Y ' RAILROAD ADVANCE CROSSING I I ! Y NARROW BRIDGE LOW FLAGGER SHOULDER AHEAD WORKERS AHEAD YELLOW indicates a general warning. Slow down and ORANGE indicates road construction or maintenance. be careful when yousee a yellow sign. It may signal a railroad crossing ahead, a no passing zone, or some other potentially dangerous situation. Likewise, a yellow solid line painted on the road means "Don't Cross." You'll want to slow down when you see an orange sign, off as part of the road may be closed or tom up. And there may be workers and maintenance vehicles around, too. 141