How loud is too loud - exhausts

[kwikaus]

Land Transport Rule

Land Transport Rule - Vehicle Equipment Amendment 2007

Rule 32017/2

Note: This Rule should be read in conjunction with Land Transport Rule: Vehicle Equipment 2004 and Land Transport Rule: Vehicle Equipment Amendment 2005.

Contents

Objective of Rule

Extent of consultation

Part 1 Rule requirements

Section 1 Application

* 1.1 Title

* 1.2 Date when Rule comes into force

Section 2 Amendments relating to equipment requirements

* 2.1 Scope of the Rule

* 2.2 Audible warning devices, speedometers, sun visors and mudguards

* 2.3 Exhaust systems

Section 3 Modification and repair

* 3.1 Modification

Section 4 Amendments to definitions

* 4.1 Insertion of new definitions

Section 5 Amendments to Schedules

* 5.1 Amendment to schedule heading

* 5.2 New schedules

Part 2 Schedules

Objective of the Rule

Land Transport Rule: Vehicle Equipment Amendment 2007 (the amendment Rule) is part of a package of measures that is being introduced to control vehicle exhaust noise. The measures in this Rule expand on the powers already available to the Police and vehicle inspectors to control excessive vehicle noise.

The objective of the amendment Rule is to amend Land Transport Rule: Vehicle Equipment 2004 (the Rule) to set the maximum decibel limits for vehicles entering into and being operated in service, and to extend objective noise testing to light motor vehicles at in-service inspection (warrant of fitness (WoF) and certificate of fitness (CoF)).

The availability of an objective noise test at in-service testing is intended:

* • to support the existing subjective noise test;

* • to provide a workable scientific method for measuring vehicle exhaust noise; and

* • to set decibel limits that are appropriate for the current New Zealand vehicle fleet, given the advances, in the last two decades, in vehicle technology.

The overall aim of the amendment Rule is to reduce excessive vehicle exhaust noise by targeting the noisiest vehicles (the ‘gross emitters’), ie, vehicles fitted with modified exhaust systems that emit noise well in excess of the permitted decibel limits. As a result, operators of these vehicles will have to bring them into compliance in order to operate them on the road.

The amendment Rule allows a vehicle inspector to refer a vehicle for an objective noise test at entry inspection and certification, or at in-service inspection and certification (WoF or CoF). Under the Land Transport Act 1998, the Police can refer a vehicle for a WoF or CoF test if the vehicle’s exhaust system does not appear to comply with the noise limits in the Rule.

If a light motor vehicle covered by the Rule has been modified, so as to increase the noise output from its exhaust system, and the exhaust noise output exceeds that prescribed by the amendment Rule, the vehicle would have to be certified in the same manner as a low volume vehicle, under the Low Volume Vehicle Code.

In extending objective testing to light motor vehicles at in-service inspection, the amendment Rule provides two options if a vehicle fails a WoF or CoF test because of an excessively noisy exhaust. The vehicle owner can decide to repair or replace the faulty exhaust system and re-present the vehicle, or the vehicle can undergo an objective noise test, at the owner’s expense. The cost of compliance with the Rule, therefore, falls mainly upon the small percentage of vehicle owners who do not comply with the law.

Based on research undertaken by the Ministry of Transport and Land Transport New Zealand prior to the making of this amendment Rule, there are an estimated 50,000 vehicles (two percent of cars or 1.3 percent of the total vehicle fleet) fitted with modified exhausts (excluding replacement exhausts similar to the original manufacturer’s exhaust system). Noise emissions from most standard vehicles are well under the decibel limits specified in the Rule.

In developing the amendment Rule, account was taken of best practice in overseas jurisdictions. Research undertaken by the Ministry of Transport assessed vehicle noise requirements in other jurisdictions, and the reduced maximum decibel limits applying from 2008 are consistent with those imposed in Australia. The current objective noise test is based on the international ISO 5130 Measurement of noise emitted by stationary road vehicles test methodology (the ‘stationary tailpipe’ test).

Extent of consultation

Formal public consultation on the amendment Rule began in February 2007 when Land Transport New Zealand released the yellow (public consultation) draft. Organisations and individuals who had registered their interest in the Rule were advised of the release of the yellow draft and copies were sent to key interested industry and other groups. The availability of the draft amendment Rule was publicised in metropolitan and selected regional daily newspapers, Mana Magazine and the New Zealand Gazette. The draft was also made available, together with Questions and Answers, on the Land Transport NZ website.

Land Transport NZ received 464 submissions on the draft amendment Rule. The comments were taken into account in redrafting the Rule. The Rule was submitted to Cabinet, before being signed by the Minister for Transport Safety.

Part 1 Rule requirements

Section 1 Application

1.1 Title

1.1(1) This Rule is Land Transport Rule: Vehicle Equipment Amendment 2007.

1.1(2) This Rule amends Land Transport Rule: Vehicle Equipment 2004.

1.2 Date when Rule comes into force

This Rule comes into force on 1 June 2008.

Section 2 Amendments relating to equipment requirements

2.1 Scope of the Rule

Paragraph 1.2(2)(b) is amended by inserting the words “vehicle noise, vehicle exhaust noise emissions and” before the words “child restraints”.

2.2 Audible warning devices, speedometers, sun visors and mudguards

The following provisions are amended by omitting the words “the Schedule” and substituting the words “Schedule 1 ”:

1. (a) subclause 2.1(3);

2. (b) subclause 2.2(2);

3. © subclause 2.3(3);

4. (d) paragraph 2.4(7)(a).

2.3 Exhaust systems

2.3(1) Subclause 2.7(1) is amended by omitting the words “the Schedule” and substituting the words “Schedule 1”.

2.3(2) Clause 2.7 is amended by substituting the following subclause for subclause 2.7(3):

* “2.7(3) An exhaust system must be designed, constructed, positioned and maintained in a way that minimises the risk of heat or fumes emitted from the system harming the motor vehicle’s occupants.”

2.3(3) Clause 2.7 is amended by substituting the following subclauses for subclause 2.7(4):

1. “Noise output of vehicles entering service

2. “2.7(4) The noise output from a Class LC, LD, LE, MA, MB, MC, MD1, MD2 or NA motor vehicle that is entering service in New Zealand must not exceed:

3. “(a) the maximum decibel level prescribed in Schedule 2 when tested in accordance with the vehicle drive-by test prescribed in:

1. “(i) ISO 362, Measurement of Noise Emitted by Vehicles; or

2. “(ii) BS 3425, Method for the Measurement of Noise Emitted by Motor Vehicles; or

3. “(iii) SAE J1470, Measurement of Noise Emitted by Accelerating Highway Vehicles; or

4. “(iv) ADR 28/01, External Noise of Motor Vehicles; or

5. “(v) TRIAS 20, Noise test procedure for motor vehicles (measurement procedure for acceleration running noise level); or

4. “(b) the maximum decibel level prescribed in Schedule 3 when tested in accordance with the Low Volume Vehicle Code.

5. “2.7(5) The noise output from a Class MD3, MD4, ME, NB or NC motor vehicle that is entering service in New Zealand must not exceed the maximum decibel level prescribed in Schedule 2 when tested in accordance with a method approved by the Director by notice in the Gazette and, a vehicle drive-by test referred to in 2.7(4)(a)(i)-(v) is deemed to be an approved method.

6. “2.7(6) A vehicle is deemed to comply with 2.7(4)(a) and 2.7(5) if:

1. “(a) the vehicle was manufactured so as not to exceed the maximum decibel level prescribed in Schedule 2; and

2. “(b) the vehicle has not been modified such as to increase the noise output from the exhaust system.

7. “2.7(7) A vehicle manufactured before 1 January 1985 is not required to comply with subclause 2.7(4) or 2.7(5) if the vehicle has not been modified such as to increase the noise output from the exhaust system.

8. “Noise output of vehicles operated in service

9. “2.7(8) The noise output from the exhaust system of a motor vehicle that is operated in service:

* “(a) must, in the case of a Class LC, LD, LE, MA, MB, MC, MD1, MD2 or NA vehicle:

o “(i) be less than, or similar to, the noise output from the vehicle’s original exhaust system at the time of the vehicle’s manufacture; or

o “(ii) not exceed the maximum decibel level prescribed in Schedule 3, when tested in accordance with the Low Volume Vehicle Code;

* “(b) must not, in the case of any other motor vehicle, be noticeably and significantly louder than the noise output from the vehicle’s original exhaust system at the time of the vehicle’s manufacture.

* “2.7(9) Subclause 2.7(8) does not apply to a Class MA or Class MC motor sport vehicle that is:

o "(a) competing in an official Motorsport New Zealand speed race or trial (or being driven directly to or from competition in such a race or trial); and

o “(b) complying with Motorsport New Zealand rules and regulations.

* “2.7(10) The Director may, by notice in the Gazette, appoint an organisation or organisations, having expertise in requirements for vehicles used in motor sport competition, to issue motor sport authority cards for the purpose of this Rule.”

Section 3 Modification and repair

3.1 Modification

Clause 3.1 is amended by inserting the following subclauses:

* “3.1(3) Subject to 3.1(4), if a Class LC, LD, LE, MA, MB, MC, MD1, MD2 or NA motor vehicle is modified such as to increase the vehicle’s exhaust noise output, the exhaust system must be tested and certified under the Low Volume Vehicle Code in accordance with Land Transport Rule: Vehicle Standards Compliance 2002.

* “3.1(4) Subclause 3.1(3) does not apply if the vehicle’s increased exhaust noise output is clearly below the maximum decibel level specified in Schedule 3.”

Section 4 Amendments to definitions

4.1 Insertion of new definitions

Part 2 is amended by inserting the following definitions in their appropriate alphabetical order:

“ADR means Australian Design Rule.”

“BS means British Standard.”

“Enter service has the same meaning as it has in Land Transport Rule: Vehicle Standards Compliance 2002.”

“ISO means International Standard Organisation Standard.”

“Motor sport vehicle means a Class MA or Class MC motor vehicle that is:

“(a) used in motor sport competition; and

“(b) operated in accordance with the conditions of a valid motor sport authority card issued to that vehicle by an organisation in 2.7(10).”

“Motorsport New Zealand means Motorsport New Zealand Incorporated.”

“Operation in service has the same meaning as it has in Land Transport Rule: Vehicle Standards Compliance 2002.”

“SAE means Society of Automotive Engineers Standard.”

“TRIAS means Type Approval Test Procedure (Japan).”

Section 5 Amendments to Schedules

5.1 Amendment to schedule heading

The heading “Schedule” in Part 3 is revoked and “Schedule 1” is substituted.

5.2 New schedules

Part 3 is amended by adding the Schedules set out in Part 2 of this Rule.

Part 2 Schedules

New Schedules inserted into Part 3

“Schedule 2 Maximum decibel levels – drive-by test

[Ref. 2.7(4)(a)]

Vehicle class Maximum noise levels

(dBA)

LC, LD, LE

(with engine capacity of 125 cm3 or less)

82

LC, LD, LE

(with engine capacity of more than 125 cm3 )

86

MA, MB, MC, MD1, MD2, and NA

81

MD3, MD4, ME, NB, and NC

(with power output of 150 kW or less)

86

MD3, MD4, ME, NB, and NC

(with power output of more than 150 kW)

88

“Schedule 3 Maximum decibel levels – stationary test

[Ref. 2.7(4)(b)]

Vehicle class Maximum noise level

(dBA)

LC, LD, LE

(with engine capacity of 125 cm3 or less) 96

LC, LD, LE

(with engine capacity of more than 125 cm3) 100

MA, MB, MC, MD1, MD2, and NA

- first registered in New Zealand before

1 June 2008 95

- first registered in New Zealand on or after

1 June 2008, and:

- manufactured* before 1 January 1985 95

- manufactured* on or after 1 January 1985 90

* If the date of manufacture cannot be ascertained, the date of first registration (outside New Zealand) is deemed to be the date of manufacture.”

Land Transport Rule - Vehicle Equipment Amendment 2007 - Rule 32017/2

Land Transport New Zealand, Ikiiki Whenua Aotearoa

[subieboy]

^^^^^That be typical confusing legal mumbo jumbo ^^^^^

So my car passed WOF all good...

[Swindog]

So really its saying modified exhausts. Therefore the loud harleys and v8s and buses are exempt because they come factory.

[subieboy]

 Swindog said:

So really its saying modified exhausts. Therefore the loud harleys and v8s and buses are exempt because they come factory.

Harley's are actually fitted with mufflers from factory, people just replace the whole exhaust/mufflers with aftermarket...

[Swindog]

HOws a cop gonna pick that though? Its obvious on a car but not on a bike unless you know what your looking at

[off2harrys]

sorry to dredge up a old topic but i too have failed my wof today on a "noisy exhaust" at vtnz,even though its been fine for the last 4years with them,and even though they`ve checked it before and was a decibel under the limit.today i just got "sorry its not factory anymore so you need to remove or cert it".went to the cert man to ask what the deal is,i thought oh well might aswell put my adjustys and seats in and get them all done but nooooo he reckons the cert for thats completely different to a normal cert aswell so another $200 just for the exhaust cert.and just to top it off have a nail in 1 tyre hahaha.I FUCKING HATE CARS.

[rex-leggy]

Wait the 30 days . Go to a diff wof place.

Get some steel wool and chicken mesh .

Jam the steel wool up there followed by the mesh rolled up.

Worked for me 3 times on my old de gts skyline ,which had a 3" strait through exhaust with a gay bore.

Even fooled vtnz twice to get me off green sticker. this was about 3 years ago tho. I even watched him shine the spotlight up the tip and he thought it had a legal silencer.

Only cost $5 to

[subieboy]

 Swindog said:

We should repel and put ME in charge. Ill sort the country out. Capitial punishment, no gangs....be good. I would call CS my "advisors"

Done

I shall be a quite sheet stirrer...

Put me in charge of law and order... South African styles ;D

[1989RS]

was talking to the boss about this today (has just come off his wof relicencing course) and they have changed the rules so if it is considerably louder than stock standard exhaust noise it is a fail. Not sure if you can get around it with a cert plate.

GRUB

[off2harrys]

Yea that was along the lines of what he was saying he didnt care how loud it was,if its not factory then hard luck mate remove or cert

[DRFVDR]

and how would that go with my RX as u cannot get a factory exhaust for it

[tmuff88]

 off2harrys said:

Yea that was along the lines of what he was saying he didnt care how loud it was,if its not factory then hard luck mate remove or cert

You have a few options here

- Jam steel wool up your exhaust

- Find a dodgy garage to give you a WOF

- Have your exhaust tested properly (if you are certain yours if under the legal limit)

- Replace your exhaust with factory

I did option 2. Costed me 25 bucks. The pain is that they might not give you a WOF in 6 months time.

[Guest]

what kind of systems are people having problems with warrants and what mods seem to be going through sweet? Looking at getting a cheap diff back system to get a bit of a rumble but don't want to go to the expense of certification or have problems trying different garages.

[boon]

 kupes said:

what kind of systems are people having problems with warrants and what mods seem to be going through sweet? Looking at getting a cheap diff back system to get a bit of a rumble but don't want to go to the expense of certification or have problems trying different garages.

My V7 STi failed at certification by about 2dB with a 3" siamese downpipe into 2.5" Zerosports cat-back ;/

And I thought it was pretty quiet. Never had an issue with WoFs though.

[webup]

I personally think its a good thing.

We live in a great country and cities are noisy enough as it is without loud cars going by every 2 minutes.

When I was 20 sure I liked hearing my near new 1989 RS rumbling along on a foggy night but now I get sick of hearing loud cars shattering the peace.

Especially those bogan large Nissan VIP type cars that lots of people seem to modify,most autos sound horrid with a big bore.

Have an exhaust that sounds sporty but not so loud it makes you look like a dick to anyone over 20.