Steep climb ahead
This sign warns that a steep uphill gradient is ahead. Reduce speed and select an appropriate gear before reaching the incline, especially if driving a heavy or underpowered vehicle.
Verified as Thai road sign ต.33 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Steep climb ahead is a hazard cue, not a rule. On the Thai exam that distinction matters. Run a few questions to see how the scenario gets framed: which way to slow, who has priority, and what the next sign is likely to be.
Now see it in questions.
Spotting Steep climb ahead 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.
