Temporary traffic-control sign
Construction materials on shoulder
Thai road sign ตค.13 — Construction materials on shoulder. Meaning: Construction materials are stored on the shoulder 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: ป้ายเตือนมีกองวัสดุบนไหล่ทาง
Independent English reference · Source: Department of Highways · Sign ตค.13
Road response
On the road
Driver action
What should you do?
Construction materials are stored on the shoulder ahead. Reduce speed before the signed condition and keep enough space to respond safely.
Exam-style scenario
Read the situation
Stacks of construction material reduce the usable shoulder beyond the warning.
Best response: Reduce speed and keep the vehicle inside the traffic lane, clear of the materials occupying the shoulder.
Sign comparison
Don’t confuse it
This sign
Construction materials on shoulder
Compare with
Shoulder work ahead
Key difference
This warning identifies materials occupying the shoulder; Shoulder work indicates an active work operation there.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
