What does the S in SMOG mean?

• A. Signal
• B. Speed
• C. Stop
• D. Safety

Answer: (C)

SMOG is a quick safety check sequence you use right before moving into or across traffic. The S stands for Stop—you bring your vehicle to a complete stop when required, such as at a stop sign, red light, or when you’re about to merge or re-enter traffic. This pause gives you a clear moment to scan the road for hazards—oncoming cars, pedestrians, cyclists, and any vehicles in your blind spots—so you can decide whether it’s safe to proceed.

After you’ve stopped, you look in your mirrors to see what’s behind and beside you, then perform an over-the-shoulder check to catch anything that the mirrors might miss in your blind spots. Only when these checks show it’s safe do you go.

This order—stop first, then check mirrors, then look over your shoulder, then proceed—helps you control the situation rather than rushing into traffic. Signaling remains important, but it comes after you’ve confirmed there’s space and it’s safe to move.