Exhaust Silencers / Exhaust Pipes

What the rule says

• allow the exhaust gas from the engine to be projected through such silencer
• not emit exhaust gas or smoke from the engine which is so dense as to cause a nuisance to, or obstruct the vision of other road users, or
• be in such a position that oil or other flammable liquid or material cannot drip or fall onto it,
• be so maintained that exhaust gas or smoke does not leak into the driving cab or passenger compartment of the vehicle. A motor vehicle may not be used on a public road -
• without an efficient exhaust silencer
• unless the gas from the engine is projected through such silencer
• if the exhaust gas or smoke from the engine is so dense as to cause a nuisance to, or obstruct the vision of other road users, or
• if the exhaust pipe or silencer thereof is in such a position that oil or other flammable liquid or material can drip or fall onto it, or
• is not in efficient working order, or
• is so placed and maintained that exhaust gas or smoke leaks into the driving cab or passenger compartment of the vehicle