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Construction vehicles prohibited — South African Road Sign R231

Construction vehicles may not go past this sign — tippers, dumpers and the like, over 3 500 kg. If you are driving a construction vehicle, do not pass this sign. It is common where heavy site traffic would damage a road or endanger a residential street.

Construction vehicles prohibited road sign

R231

At a glance

Sign code
R231
Type
Regulatory
Official meaning
No construction vehicle may proceed beyond this sign.

What the Construction vehicles prohibited sign means

Construction vehicles may not go past this sign — tippers, dumpers and the like, over 3 500 kg.

What you must do

If you are driving a construction vehicle, do not pass this sign. It is common where heavy site traffic would damage a road or endanger a residential street.

Know the mistake this sign turns on

Full access adds the confusion Construction vehicles prohibited is most often mistaken for and the hint for the test, on this sign and every other one — plus practice questions and timed mock papers. The practice sample and the readiness test are free.

See the free practice test

Sources

  • Road Traffic Signs chart, National Department of TransportThe official chart. Sign R231 was checked against it, artwork and meaning, before being published here.
  • National Road Traffic Regulations, 2000 — Schedule 1Where the prescribed meaning of each road traffic sign is set out.

Last updated 2026-08-23.

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