Home / Newfoundland and Labrador / Questions / Road Signs Road Signs Report A yellow diamond with an S-shaped arrow means: A Slippery road B Winding road — series of curves ahead C Dead end D Roundabout Show Answer & Explanation Correct Answer: B. Winding road — series of curves ahead Common on NL coastal and inland routes. Previous Next More Road Signs Questions A centre lane marked with two-way arrows and yellow edges means: A sign reading 'HIGH COLLISION AREA' means: A yellow diamond with YIELD icon means: A sign 'PLAYGROUND ZONE ENDS' means: A yellow plate '50 km/h' under a curve warning sign is: Often Missed All Newfoundland and Labrador Questions Smart Practice Mock Exam Road Signs Guide