Temporary traffic-control sign
Construction ahead
Thai road sign ตก.2 — Construction ahead. Meaning: Road construction is taking place ahead on or close to the carriageway. 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: ป้ายเตือนก่อสร้างทาง
Independent English reference · Source: Department of Highways · Sign ตก.2
Road response
On the road
Driver action
What should you do?
Road construction is taking place ahead on or close to the carriageway. Reduce speed before the signed condition and keep enough space to respond safely.
Exam-style scenario
Read the situation
The first orange warning appears before a road-construction area whose exact lane layout is not yet visible.
Best response: Reduce speed at the first orange warning and look for the lane controls that define the work area ahead.
Sign comparison
Don’t confuse it
This sign
Construction ahead
Compare with
Road work ahead
Key difference
The symbol-based orange warning announces a construction area; Road work communicates the temporary hazard with text.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
