Tag Archives: motorcycle
On Friday October 17, a special environmental panel discussion will take place, hosted by the American Motorcyclist Association (AMA). The topic will be Understanding and Controlling Vehicle Sound in the Environment.
On Saturday, October 18 Chris will be helping motorcycle riders by performing sound testing for motorcycles using an internationally recognized SAE sound testing method and providing noise control guidance to motorsports facilities and regulatory authorities.
1. What are the road side or trail side sound test procedures?
The sound test procedure for Motorcycles, ATV’s, ROV’s and MUVs is SAE J1287. This is a stationary testing method where the measurement is taken close to the vehicle.
This procedure is outlined in numerous vehicle operational codes and in sporting regulations.
On Highway Motorcycles and Dual Sport Motorcycles – These vehicles are becoming very popular. The testing procedure for these on highway legal vehicles is covered in the SAE Test procedure, SAE J1287.
On Highway Motorcycles “Street Bikes” – Be advised that an SAE test procedure has been developed specifically for On-Highway motorcycles. The test procedure is SAE J2825.
(Technical report issued, summary available upon request) (Video: http://www.youtube.com/watch?v=2KdYUhH3JSo)
2. Are new designs of vehicles required to be noise compliant?
Yes, Side by Side ATV’s also known as ROV’s “Recreational Off Highway Vehicles” / MUVs “Multi Use Vehicles” are becoming very popular.
These vehicles are subject to the same noise and spark arrester regulations as other OHV’s and the test procedures and sound limits apply.
It is possible that these Off-Highway vehicles may have On Highway / limited street use privileges in some communities, therefore, noise control levels for street registered vehicles apply. (Video Available)
Other Street / On Highway registered vehicles such as Jeeps and Sand Rails and Hot Rods must conform to noise control and adequate muffler requirements.
Refer to the appropriate vehicle code sections. The sound measurement test procedures are published by the SAE.
For California and many other states and sections of Canada the common automotive roadside sound test methods for automobiles are SAE J1169 or SAE 1492, or the ISO counterpart. This is a 20” test method and is very similar to the sound testing methods utilized for Off Highway Motorcycles and ATVs / MUVs. (Video available)
3. Are Mufflers and a Spark Arresters the same thing?
No, Off Highway Vehicle exhaust systems have several components. First is the Muffler. The muffler is for reducing the sound level.
The second component is often a Spark Arrester.
The Spark arrester is intended to minimize the potential for discharging particulates that can be an ignition source. These are individual components often. Each component requires maintenance to function properly.
4. What are the sound measuring equipment requirements?
For Enforcement purposes, an ANSI Type 1 instrument is needed. The “evidence level” instruments require calibration to be utilized for evidence gathering purposes. When selecting instruments, be sure to consider the required performance level and calibration maintenance costs. The evidence equipment calibration term is yearly.
For Awareness measuring purposes, an ANSI Type 2 instrument is suitable. These instruments are frequently utilized by trail volunteers and clubs. These instruments when calibrated and used by trained personnel provide reasonably accurate data. These instruments have a recommended calibration term of every other year.
5. Are sound measuring equipment programs available?
Yes, several equipment programs are available, ranging from equipment accuracy verification programs (Calibration) and “loaner” equipment kits for special events.
Complete sound measuring instrument kits are available for purchase.
6. How do you get more information or training?
Instruction and training for noise control is available. DPS Technical coordinates these training sessions. Currently a schedule of live on location classes is being developed for the season.
A web based training module is available as well as several field training refresher and outreach sessions.
In the event your agency needs people trained please send an e-mail to us and we will send you the training schedule.
It is my hope that this information is beneficial. In the event you require more information, please do not hesitate to contact me directly.
Chris F. Real, CLS
President, DPS Technical, Inc.
Field logistical services / Media support
DPS Technical Inc. has capabilities for providing sound studies and solutions to noise mitigation in both local and remote locations. Our DPS Technical Inc. logistical support service has the ability to perform services such as professional support in sound measurement, management, and mitigation for Law Enforcement and Land Managers, as well as education, equipment, and support for the organized event/race promoting Club or Track Owner. Media support for On Road, Off Road and ATV vehicles, vehicle introductions, sound measurement, and education in most locations in the US are also available.
Our field service center can be seen at numerous motorcycle & ATV motorsports events each year, such as the Nevada 200 & 1000, Loretta Lynn’s Motocross Championships, the Rocky Mountain ATV Jamboree, as well as at media functions such as the Dirt Rider Magazine 24 Hour, and community educational events such as the NOHVCC National Land Managers Conference, and Community & Vehicle Noise Abatement Outreach Clinics. Our field services assist our clients as well as their customers. Feel free to stop by the DPS Technical Inc. mobile service center anytime for an introduction to sound education and management or for a voluntary “non-ticket” vehicle sound test.
Our services have continued to expand since our founding in 1995.
In 2004 we relocated from our former location at the Rialto Airport Speedway to our present Upland, California facility.
Our corporate office is centrally located nearLos Angeles, at the Cable Business Park within Cable Airport in Upland, CA — the largest privately owned airport in the world.
Our facilities permit us to test vehicles, components and brakes as well as doing sophisticated sound and illumination testing.
Our vast experience and reputation specifically with motorcycles and small personal and sport transportation vehicles are a tool that can be utilized to provide well qualified physical vehicle testing and inspections.
Our well qualified staff members are available to provide dedicated technical support in field activities, ranging from media interaction, consumer support and vehicle display operations and mechanical surveillance.
Moreover, our mobile forensics unit allows us to operate in the field to investigate and document acoustic levels, collision scenes and accident sites while having full panoply of film, photographic, GPS and other technical services that are specifically tailored for motorcycles and other personal transportation vehicles.
Please do not hesitate to contact me personally if we can be of service.
Chris F. Real, CLS
DPS Technical, Inc.