Command signs
Vehicles transporting Dangerous Substances Only (R34)

The driver of a vehicle conveying dangerous goods shall only use such road or portion of such road.
Where
In areas where there is mining and industrial activities taking place.
Purpose
Indicates that the road or a portion of the road is set aside for use by vehicles conveying dangerous goods.
Action
The driver of a vehicle conveying dangerous goods shall only use such road or portion of such road.
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Other command signs
- Speed limit, time period (CS15)
- Minimum speed sign (R13)
- Vehicles exceeding mass only (R14)
- Keep Left / Keep Right (R15)
- Proceed Left Only (R16)
- Proceed Right Only (R17)
- Proceed Straight Only (R18)
- Turn Left Only (R19)