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Motor Vehicle Inspection & Maintenance
Motor Vehicle Inspection & Maintenance
P.O. Box 437 - 380 Scotch Road
Trenton, New Jersey 08625-0437
Phone: (609) 530-4035
Fax: (609) 530-5342
 
 
 
 
Emission Technician Education Program (ETEP)
Enhanced Inspection & Maintenance Program
Heavy Duty Diesel Vehicle Inspection Program (HDDVIP)
Diesel-Fueled Motor Vehicles
Gasoline-Fueled Motor Vehicles
Idling & Smoking Vehiicles
Reports
Heavy Duty Diesel Vehicle Inspection Program (HDDVIP)

Welcome to the homepage for the Heavy-Duty Diesel Vehicle Inspection Program (HDDVIP). The HDDVIP regulates emissions from heavy-duty diesel powered motor vehicles (HDDVs) with a manufacturers gross vehicle weight rating (GVWR) of 18,000 pounds or more. The GVWR may be different from the vehicles' registered weight. All diesel-powered trucks, commercial buses and school buses including private and government vehicles are subject to regulation. Emergency vehicles such as ambulances and fire trucks are exempted.

While New Jersey's diesel smoke reduction program has been in full force since 1998, other states have also enacted diesel opacity inspection programs. These include California, Connecticut, Maine, Maryland, Massachusetts, New York, and the province of Ontario. Several other states will be bringing programs on line soon.

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PROGRAM FORMAT

The HDDVIP is jointly administered by the NJ Division of Motor Vehicles (DMV), the NJ State Police (NJSP), and NJDEP. All HDDVs are required to undergo an emissions test for smoke opacity within 90 days of their annual registration. Inspections are performed at a licensed Diesel Emissions Inspection Center (DEIC) under our Periodic Inspection Program. They are also subject to random roadside inspections, which includes out of state vehicles as well. The Roadside Enforcement Program fields ten teams of DMV inspectors and State Police that surveil locations all across New Jersey. Smoking vehicles, and excessive idling of diesel engines, are other elements of the HDDVIP which are controlled by state law.

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ROADSIDE ENFORCEMENT PROGRAM

All HDDVs, New Jersey registered or out of state, are subject to random roadside inspections. Ten teams of DVM inspectors and State Police monitor a network of inspection sites that cover the entire state. The inspection sites are selected to provide maximum safety for the motoring public, the truck drivers, and the inspection team. The roadside inspection utilizes the snap-acceleration test, one of three test methods adopted by NJDEP. Penalties, in the form of fines, are issued for exceeding the emission standards , and for failing to have the annual inspection performed.

For more information on the roadside enforcement program, click here:

Motor Vehicle Services

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PERIODIC INSPECTION PROGRAM

As stated above, all diesel-powered vehicles 18,000 pounds or more GVWR must undergo an annual emissions inspection within 90 days of initial or renewed registration. The inspection, which utilizes one of the three test methods adopted by NJDEP, must be performed at a DMV licensed Diesel Emissions Inspection Center (DEIC). A network of almost 300 DEICs has been developed across the state, in all 21 counties. So, chances are there is a convenient location for you to have your HDDV inspected.

A DEIC may not be a repair facility. If your vehicle needs repairs or maintenance, check with your local DEIC to see if they provide the services you need.

Find a DEIC near you: New Jersey Motor Vehicle Commission

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DEICs

DEICs are licensed by NJDMV. To apply for a DEIC license, to obtain forms, stickers, or for more information about the DEIC program, contact NJDMV at 609-292-5330.

DEICs must use testing equipment approved by NJDEP.

List of approved opacimeters (Pdf Format)
Search for a DEIC Center

Vehicle inspection reports must be submitted to NJDEP. This is in addition to the test report printed out by the opacimeter, and must be filled out for each vehicle inspected. Currently there are two reporting options available:

Option 1 - Scannable Paper Forms (DEIC-001C):

Also known as "bubble forms" the inspection data is recorded by filling in "bubbles" on a pre-printed form. The forms must be kept clean and flat. They must not be bent, folded, torn or ripped. They must not have any tape, staples, grease marks, fingerprints, punch holes, or any other marks that will interfere with the scanning process. The forms are provided free of charge by NJDMV, and are picked up and returned to NJDEP.

Instructions for filling out DEIC-001C (Pdf Format)

Option 2 - Electronic Reporting Program (ERP):

The ERP is a system that allows filling out individual vehicle inspection reports electronically, in an Excel97 spreadsheet, and filing a consolidated master report quarterly, via e-mail. DEICs that have repeat customers, customer lists, or fleet inventory lists in almost any electronic file format, can cut, copy, paste or import that data into the NJDEP electronic reporting form. The electronic form only replaces the scannable paper form. All other records required by NJDMV must be maintained.

The ERP is provided free of charge. Participation may be terminated for failure to submit timely reports, or for submitting incomplete reports. Registration requires a signed agreement form, which is countersigned by the ERP manager.

Download the ERP agreement form, instructions, spreadsheet and other materials

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TEST METHODS

Test methodologies adopted by the Department of Environmental Protection include the snap-acceleration test, rolling-acceleration test, and stall test for determination of exhaust smoke opacity from heavy-duty diesel vehicles (HDDVs). In a roadside environment the snap acceleration test is utilized. Periodic inspection of HDDVs may utilize either of the snap-acceleration, rolling-acceleration or the stall tests.

Measurement apparatus (opacimeters) must conform to the specifications set forth by the Society of Automotive Engineers Recommended Practice J-1667 (Pdf Format).

Snap acceleration test:

This test, which is to be performed in accordance with the Society of Automotive Engineers (SAE) recommended practice J1667, is designed for use on a stationary vehicle, equipped with an engine speed governor, which is not under load. The peak smoke opacity is measured while the vehicle's accelerator control is positioned at its forward-most or downward-most position or when the primary engine power control engine is delivering the maximum potential power and fuel. This condition is known as "wide open throttle" for diesel-powered vehicles. The vehicle engine is then accelerated from idle speed to the maximum governed revolutions per minute (RPM), that is, the maximum engine speed achievable on a vehicle with speed control limitations.

Rolling acceleration test:

The rolling acceleration test is a relatively short, on-road transient test cycle, which simulates the normal operation of a heavy-duty diesel engine. The rolling acceleration test entails operating the vehicle at wide open throttle while it is loaded under its own inertia in low gear from slightly above idle speed to the maximum governed RPM. Alternatively, for a non-governed engine or a non-low speed engine, the vehicle is operated at wide open throttle under its own inertia in low gear from slightly above idle speed to approximately 85 percent of maximum engine speed or 12 mph, whichever occurs first. This test mode is very similar to a mode that occurs during the first segment of the EPA certification smoke cycle for heavy-duty diesel engines (40 CFR §86.884-7). The peak smoke opacity is measured during this operation.

Stall test:

The stall test is to be performed only on vehicles equipped with an automatic transmission. The vehicle's brakes and wheel chocks are used to keep it stationary throughout the test. The engine is accelerated under full power in drive gear from idle until the engine speed stabilizes against the transmission load. This final, steady, engine speed is maintained for one to three seconds. The stall test creates a transient loaded mode for obtaining peak smoke opacity.

To view the actual step by step test procedures, and their application to specific vehicle types, see N.J.A.C. 7:27B-4 - Air Test Method 4: Testing procedures for Motor Vehicles.

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OPACITY

Smoke opacity is a measurement of light extinction, or the blackness of the exhaust plume, expressed as a percentage. 100% opacity would be completely dark, and 0% would be totally transparent. The black smoke we see in diesel exhaust is composed primarily of carbon particles resulting from the combustion of diesel fuel.

The opacity limit is measured at the peak, or darkest point, of the exhaust cloud. This measurement is most commonly taken during the snap acceleration test, where the vehicle is at idle, with all brakes off, and the throttle is "punched" to the floorboard, initiating the exhaust cloud. Opacity is measured as a surrogate for particulate matter.

The table below illustrates the approximate opacity of our current emission standards.

0%

30%
40%
55%
70%
100%

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OPACIMETERS

Opacimeters use a laser beam directed at a photo-receptor cell, to measure the exhaust smoke plume. The stock photolaser is either directed through the plume itself, or a sample, or "plug" of smoke is directed into a chamber through which the laser beam passes. As noted above, the degree to which the beam is obscured from the receptor cell is translated into a percentage, where a value of 100% means that the light is completely blanked out.

NJDEP approves opacimeters for use by the DEICs.

List of approved opacimeters (Pdf Format)

EQUIPMENT MANUFACTURERS: The requirements for approval may be found here. [D:\PROJECTS\DIESEL\smkmeter\approval\!ApprovalCkList] Please note that third party certification with Department standards is required.

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EMISSION STANDARDS

HDDVs are subject to opacity standards based on the production year of the vehicles' engine. The standards were devised to take into account the state of engine technology, and typical wear conditions. The HDDVIP opacity standards are:

Heavy-duty trucks - 18,000 pounds or more
1973 and older
70%
1974 or 1990
55%
1991 and newer
40%
No visible blue smoke >3 consecutive seconds

Commercial & School Buses - 18,000 pounds or more
1987 and older
40%
1988 and newer
30%
Retrofitted buses
(rebuilt engines with a low emissions kit)
30%
No visible blue smoke >3 consecutive seconds

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PENALTIES

Violations are placed upon owner or lessee, not the operator.
The fine for a first offense is $700, reducible to $150, with proof of repair.
For second and subsequent offenses the fine is $1300, reducible to $500 with proof of repair.
Failure to comply with the annual inspection requirement carries a fine of $500.

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SMOKING VEHICLES

Excessive black smoke is frequently caused by an overly rich fuel mixture that doesn't combust completely, creating soot. It may also be caused by clogged air or fuel filters; clogged or worn fuel injectors; lack of maintenance; or other engine defects, indicating the need for repairs.

Tips on how to reduce diesel smoke emissions and lower maintenance costs (Pdf Format)

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IDLING VEHICLES

Besides excessive smoke, HDDVs are also subject to an idling standard. While there are several exemptions to the rule, under most common circumstances, HDDV engines are not allowed to idle for more than three minutes.

Some typically exempted activities are:

  • Warming up, at the vehicles' place of business (30 minutes allowed)
  • If the engine powers the heat or A/C, while the driver is using the sleeper berth during a required rest period.
  • While undergoing repairs

Typically regulated activities are:

  • Idling at stops during a delivery run
  • Idling during layovers
  • While waiting to pick up passengers, after dropping them off at events or activities such as the theater or an amusement park.
  • Waiting at schools to pick up or drop off students.

The idling rule is found at N.J.A.C. 7:27-14 .3, "General Prohibitions".

Idling does more than create unnecessary emissions, it wastes fuel too - typically one gallon per hour, or more. For maintenance and fuel saving tips, check out "Smoke Awareness for Truckers".

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TOXIC EMISSIONS

A recently released final report by the USEPA listed diesel exhaust as a probable cause of lung cancer. It is also associated with increase risk of asthma and other breathing related illnesses. Both USEPA and the California Air Resources Board have declared diesel exhaust a toxic substance.

Diesel soot particles, and the chemicals that adhere to them (such as benzene) are the cause of the problem. Sulfur in the fuel helps to form soot particles. Too much fuel causes the large black particles we can see. The large particles, called PM10 (particulate matter, over 10 microns in diameter), once ingested, can be mostly expelled from the body, when caught by your natural air filtration system. Small particles, called PM2.5 (2.5 microns or less in diameter), can become trapped in the body, and cannot be expelled. In general, particulates cause breathing problems, and the associated chemicals may cause other physiologic illnesses. Diesel engines also produce nitrogen oxides, which help to form ozone, which is also a contributing cause of breathing illnesses.

The risk of health effects include: increased incidence of asthma, bronchitis, and other breathing related illnesses, increased emergency room visits, and increased mortality. Risk increases with increased exposure to diesel exhaust.

For more information on diesel exhaust and health issues, follow these links:

Asthma - http://www.state.nj.us/dep/airmon/airtoxics/asthma.htm
Diesel emissions - http://www.state.nj.us/dep/airmon/airtoxics/diesemis.htm
CARB Diesel Toxic Assessment - http://www.arb.ca.gov/toxics/summary/dieselex/dieselex.htm
California's Diesel Risk Reduction Program - http://www.arb.ca.gov/diesel/dieselrrp.htm
USPEAs Health Assessment Document for Diesel Exhaust -
http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=29060


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THE NTE RULE

The NTE rule, so named because of the new emission standards coupled with the "Not To Exceed" test limits devised by USEPA, refers to emission limits set for worst case, in-use situations. Engines will be evaluated in chassis, and will be allowed a limit of 1.25 times the federal engine standard, underneath an "umbrella" created by the torque and horsepower curve specific to that engine. The 1.25 allowance is sufficient to account for practically any in-use situation, and virtually any certified engine set to the manufacturers original specifications, and in well maintained condition, will be able to meet this emission limit.

The Federal NTE standards are set to go into effect in 2007. In 1998, several major engine manufacturers entered in a consent decree with USPEA. Because they had installed "defeat devices", which allowed the engines to emit emissions in excess of the standards allowed by USEPA, the manufacturers agreed to produce engines that complied with the stricter NTE emissions standards sooner than other manufacturers need to. These engines of these manufacturers will begin showing up in new vehicles in January 2003.

New Jersey, along with several other states, has adopted the California NTE rule because the consent decree expires at the end of 2004, and the Federal rule will not take effect until 2007. This created a regulatory gap, or window, for engine model years 2005 and 2006. By adopting the NTE rule NJDEP requires that only NTE compliant engines be sold, leased, rented, imported, delivered, purchased, acquired, received or otherwise transferred in this State, or offered for sale, lease, or rental, beginning with the 2005 engine model year.

NJDEP NTE rule: http://www.state.nj.us/dep/aqm/rules.htm

USEPA Consent Decree: http://www.epa.gov/compliance/civil/programs/caa/diesel/index.html

USEPA NTE requirements: http://www.epa.gov/otaq/diesel.htm#hd2007

California NTE rule, Title 13, section 1956.8 of the California Code of Regulations, incorporated herein by reference: http://www.arb.ca.gov/regact/ntetest/finreg2.doc

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RULES & REGULATIONS

Established by Public Law 1995, Chapter 157, the rules that govern the HDDVIP are:

NJ Department of Environmental Protection:

N.J.A.C. 7:27-14 - Control and Prohibition of Air Pollution from diesel-fueled Motor Vehicles
(The idling rule is found at paragraph 14.3, "General Prohibitions".)
N.J.A.C. 7:27B-4 - Air Test Method 4: Testing procedures for Motor Vehicles
N.J.A.C. 7:27-26.8 -16 - Heavy-Duty Diesel New Engine Requirements Program (NTE)

NJDEP diesel regulations: http://www.state.nj.us/dep/aqm/rules.htm

NJ Department of Transportation:

N.J.A.C. 13:20-26 - Periodic Diesel Inspection Program
N.J.A.C. 13:20-46 - Diesel Emission Inspection and Maintenance Program
N.J.A.C. 13:20-47 - Diesel Emission Inspection Centers - Licensing

NJ State Police:

N.J.S.A. 39:8-59 through 76 - Periodic Diesel Inspection Program

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HDDV LINKS

State Government:

NJDMV - http://www.state.nj.us/mvc/
NJSP - http://www.njsp.org

Federal Government:

USEPA HDDVs - http://www.epa.gov/otaq/hd-hwy.htm

NJ Trucking:

NJMTA - http://www.njmta.org

Other states inspection programs:

California - http://arbis.arb.ca.gov/msprog/hdvip/hdvip.htm
Massachusetts - http://vehicletest.state.ma.us/diesel.html
Nevada - http://www.dmvstat.com/emission_diesel.htm
New York - http://www.dec.state.ny.us/website/dar/bms/hddv.html
Ontario - http://www.driveclean.com/hdv/

Other trucking organizations:

Diesel Technology Forum - http://www.dieselnet.com/standards.html

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Questions and comments about the HDDVIP: dieseld@dep.state.nj.us

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Department of Environmental Protection
P. O. Box 402
Trenton, NJ 08625-0402

Last Updated: May 11, 2007

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