>At least in North America, a hexagonal sign is always a stop sign.
the back of a stop sign is often a slow sign, or a do not enter sign. The same shape of sign, but different meaning from different directions. The slow variant is often held by construction workers, hence the GPs example.
the back of a stop sign is often a slow sign, or a do not enter sign. The same shape of sign, but different meaning from different directions. The slow variant is often held by construction workers, hence the GPs example.