warning sign
Single chevron left marker
Thai road sign ต.66 — Single chevron left marker. Meaning: A black-and-yellow chevron marker indicates a sharp change of alignment to the left. Catalog status: additional official road-sign reference.
Thai name: ป้ายเตือนแนวทาง
Independent English reference · Source: Department of Highways · Sign ต.66
Road response
On the road
Driver action
What should you do?
Slow down and follow the single chevron to the left around the change in alignment.
Exam-style scenario
Read the situation
A single left chevron stands at the outside of a bend with limited forward view.
Best response: Approach slowly and follow the single chevron left around the limited-view bend.
Sign comparison
Don’t confuse it
This sign
Single chevron left marker
Compare with
Multiple chevron left marker
Key difference
One left chevron marks a local alignment point; the repeated left-chevron board continues around a longer curve.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
