1.Regulatory Signs (also called Mandatory Signs): These signs inform road users of specific
laws,regulations, and prohibitions. Violating these signs is a legal offense. "No Parking" and
"No Stopping" fall directly under this category because they strictly prohibit an action. They
are typically circular in shape.
2. Warning Signs (or Cautionary Signs): These are meant to alert drivers about impending
hazards or road conditions ahead (e.g., sharp curves, narrow bridges). They are triangular in
shape.
3. Informatory Signs (or Guide Signs): These provide directions, distances, and information
about roadside facilities (e.g., hospitals, petrol pumps, public parking areas). They are
rectangular in shape.
4. Compulsory Direction Signs: While these exist, they are actually a sub-classification within
the Regulatory Sign category itself, dictating mandatory maneuvers like "Turn Left Only.