warning sign
Steep climb ahead
Thai road sign ต.33 — Steep climb ahead. Meaning: This sign warns that a steep uphill gradient is ahead. Learner-manual coverage: this identity is shown in the current DLT car-driver learner manual. Inclusion does not mean it appears in every theory test.
Thai name: ป้ายเตือนทางลาดชัน
Independent English reference · Source: Department of Highways · Sign ต.33
Road response
On the road
Driver action
What should you do?
Reduce speed and select an appropriate gear before reaching the incline, especially if driving a heavy or underpowered vehicle.
Exam-style scenario
Read the situation
A heavily loaded vehicle is nearing a long uphill grade shown by this rising-slope symbol.
Best response: Select a suitable gear before the loaded vehicle starts the long climb and maintain steady control uphill.
Sign comparison
Don’t confuse it
This sign
Steep climb ahead
Compare with
Steep descent ahead
Key difference
The slope rises in the travel direction and warns of a climb; the mirrored grade falls and warns of a descent.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
