No Entry Class 1 road sign (R3) flammable liquids sign and constrained lanes

and constrained lanes

and access points where “Construction in progress” must be visible before action is taken

Road sections with multiple consecutive curves

Compatibility

General Signs and Symptoms of Poisoning

No Entry Class 1 road sign (R3) flammable liquids sign and constrained lanesThe No Entry road sign (R3) is an R Series regulatory control sign used to prohibit vehicles from entering a specific road, lane, or area. It is commonly installed at one way streets, restricted access points, and controlled traffic zones. Purpose and function This sign prevents wrong way entry, reduces collision risk, and enforces access restrictions. It plays a critical role in maintaining orderly traffic flow and protecting road users from head on