Slippery road
The road surface ahead may be slippery, often due to weather, oil, or a surface change. The driver should reduce speed and avoid sudden braking, accelerating, or steering inputs.
Verified as Thai road sign ต.38 from Department of Rural Roads sign series on 2026-05-15.
Study guide
Connect this sign to practice
Slippery road sits in a cluster of warning signs that look uncomfortably similar. The Thai exam exploits that overlap. Reviewing it next to its visual neighbours in the question flow keeps the differences sharp on test day.
Now see it in questions.
Spotting Slippery road in isolation is one thing. Recognising it inside a real exam-style question, among lookalikes and trick wording, is another. The diagnostic mixes it in for you.
