What should be your following distance when the expressway is wet or slippery?

• A. 3 second rule
• B. 4 second rule
• C. 6 second rule
• D. 8 second rule

Answer: (C)

When the expressway is wet or slippery, you need more space to stop because tires have less grip and braking distances increase. On high-speed expressways, that extra cushion is even more important to avoid rear-ending the car in front or losing control. The six-second rule gives you a safer margin to react and come to a stop if the vehicle ahead slows suddenly or if you encounter a slick patch, spray, or hydroplaning risk. You measure it by picking a fixed object on the road; when the car in front passes it, start counting seconds. If you reach that same object after six seconds, you’re maintaining a safe following distance. If conditions are worse—heavy rain, poor visibility, or large vehicles spraying water—extend the gap beyond six seconds.