warning sign
Obstruction marker — pass either side
Thai road sign ต.71 — Obstruction marker — pass either side. Meaning: Marks an obstruction or median that traffic may pass on either the left or the right. 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: ป้ายเตือนสิ่งกีดขวาง
Independent English reference · Source: Department of Highways · Sign ต.71
Road response
On the road
Driver action
What should you do?
Reduce speed and pass the marked central obstruction on either side when the chosen path is clear.
Exam-style scenario
Read the situation
An island blocks the centre of the approach while this marker indicates usable space on both sides.
Best response: Select either usable side of the island, reduce speed, and keep clear of its marked face.
Sign comparison
Don’t confuse it
This sign
Obstruction marker — pass either side
Compare with
Large left-or-right alignment marker
Key difference
The striped panel marks a central obstruction that traffic may pass on either side; the large horizontal arrow warns that the road alignment changes left or right and does not continue straight.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
