warning sign
Traffic signals ahead
Thai road sign ต.53 — Traffic signals ahead. Meaning: Traffic signals are installed 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: ป้ายเตือนสัญญาณไฟจราจรข้างหน้า
Independent English reference · Source: Department of Highways · Sign ต.53
Road response
On the road
Driver action
What should you do?
Reduce speed and be prepared to stop at the signal.
Exam-style scenario
Read the situation
The signal heads are hidden by a crest, but this warning appears while traffic ahead is slowing.
Best response: Ease off the accelerator and be ready to stop because the hidden signal may be red beyond the crest.
Sign comparison
Don’t confuse it
This sign
Traffic signals ahead
Compare with
Stop ahead
Key difference
The three-lamp symbol warns of signal control ahead; Stop ahead uses the octagonal Stop silhouette for a fixed stop control.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
