Workers ahead
Thai road sign ตก.3 — Workers ahead. Meaning: People are working ahead on or close to the carriageway. 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.3
Study guide
Use this reference with practice
Orange diamond warning sign showing a person working with a shovel. Use this independent reference to recognise Workers ahead. Compare its shape, colour, symbols and arrows with nearby warning and work-zone signs.
Study guide
Related signs
Compare Workers ahead 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.
