This is going OT, but you've heard the RSAF F-15SG with
their low bypass engines?
Its higher in pitch at higher speeds......but it sounds orgasmic
at low speeds.
Come to think of it......since the B9 traces its roots to the
Olympian, should I still be surprised that the Volvo DDs roar? But
it just gets louder as each new model appears.
NEA has rules governing noise emission and smoke emission under
Environmental Portection and Management Act (Chapter 94A, Sections
12 (5) and 77) - for vehicles
Below is an extract from the Act :
PART V
OFFENCES
Smoky motor
vehicles
19. — (1) No person shall use or cause or
permit to be used on any road any motor vehicle from which any
smoke or visible vapour is emitted.
(2) The driver of any motor vehicle
found emitting smoke or visible vapour in contravention of
paragraph (1) shall be guilty of an offence, and if the driver is
not the owner of that vehicle, the owner shall also be guilty of an
offence.
Excessive
noise
20. — (1) No person shall use or cause or
permit to be used on a road any motor vehicle that does not conform
to the standard for noise emission specified in the Sixth Schedule
for the class of vehicle to which that motor vehicle
belongs.
(2) Any person who contravenes
paragraph (1) shall be guilty of an offence.
(3) Where a person is charged with
an offence under paragraph (1), it shall be good defence for that
person if —
(a) he can prove that the noise or
continuance of the noise from the motor vehicle was due to some
temporary or accidental cause which could not have been prevented
through due diligence and care on the part of the owner or driver
of the vehicle; or
(b) where the person is the driver
or the person not being the owner of the motor vehicle has charge
of the vehicle, he can prove that the noise arose through a defect
in the design or construction of the vehicle or trailer or through
the negligence or fault of some other person whose duty was to keep
the motor vehicle or trailer in proper condition or in a proper
state of
repair or adjustment or properly to
pack or adjust the load of such motor vehicle or trailer, and could
not have been prevented through due diligence and care on the part
of that driver or other person in charge of the
vehicle.
STANDARD FOR NOISE EMISSION FOR NEW
MOTOR VEHICLES
1. Motor vehicles of the following classes
shall not emit any noise exceeding the following levels specified
when measured 0.5 metre from the open end of the exhaust pipe of
the
vehicle:
(d)
Goods vehicle or bus with engine
capacity not exceeding
10,000 cubic
centimetres - 103 decibel (A)
noise level.
(e)
Goods vehicle or bus with an engine capacity
exceeding
10,000 cubic
centimetres - 105 decibel (A) noise
level
STANDARD FOR EXHAUST EMISSION FOR
IN-USE MOTOR VEHICLES
1. Every petrol driven motor vehicle that
is in use must be equipped with a silencer, expansion chamber or
other contrivance suitable and sufficient for reducing, as far as
may be reasonable, the noise caused by the escape of exhaust gases
from the engine where it is propelled by means of an internal
combustion engine.
2. All parts of the exhaust system of any
petrol driven motor vehicle must be in good and sufficient
condition and comply with the exhaust's
requirements.
3. The level of carbon monoxide emitted
from the exhaust of any petrol driven motor vehicle must not exceed
—
(a) in the case of a petrol driven
motor vehicle (other than a motor cycle) registered
on
or after 1st July 1992, 3.5% by
volume;
(b) in the case of a petrol driven
motor vehicle (other than a motor cycle) registered
on
or after 1st October 1986 but
before 1st July 1992, 4.5% by volume;
(c) in the case of a motor cycle
registered on or after 1st October 1986, 4.5% by volume;
or
(d) in the case of a motor cycle
registered before 1st October 1986, 6% by volume.
4. Every diesel driven motor
vehicle that is in use shall not emit smoke of opacity greater than
50 Hartridge Smoke Units (HSU) or its equivalent.
5. Every motor vehicle
(whether petrol driven or diesel driven) must not emit any visible
smoke or vapour when in use.
For information, please.
