Home / Alberta / Questions / Road Signs Road Signs Report A solid yellow traffic light: A Speed up B Stop if safe; else cross with caution C Stop and wait D Yield cross traffic Show Answer & Explanation Correct Answer: B. Stop if safe; else cross with caution Speeding up is a crash cause; stop when safe. Previous Next More Road Signs Questions Flashing hand with countdown means: A 'Pavement Ends / Gravel Ahead' sign: A flashing red light: A solid green light: A 'No Stopping' sign: Often Missed All Alberta Questions Smart Practice Mock Exam Road Signs Guide