Right lane merges left
Thai road sign ตก.20 — Right lane merges left. Meaning: The right lane merges into the through lane on its left. 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.
Independent reference · Official source: Department of Highways · Identity ตก.20
Study guide
Use this reference with practice
Orange diamond work-zone sign showing the right lane merging left. Use this independent reference to recognise Right lane merges left. Compare its shape, colour, symbols and arrows with nearby warning and work-zone signs.
Study guide
Related signs
Compare Right lane merges left with nearby warning signs. Shape, colour, symbols, arrows and wording distinguish each identity.
Put sign knowledge into practice.
Use broader signs-and-signals practice to apply the visual distinctions reviewed in this independent reference.
