Your business is bleeding crucial resources. The reason for it is you're overwhelmed by the legal demands to keep your fleet compliant and that makes you lose time and money.

Diesel Pollution Solutions is here to change that. We perform precise and prompt smoke inspections, giving you back the time to operate your business and helping you reduce costs.

Vehicle emissions are a serious source of air pollution, especially in urban areas:

  • Even though they make up a comparatively small portion of the fleet population, heavy-duty vehicles are critical emitters of smoke due to their frequent long mileage.
  • The World Health Organization has classified diesel exhaust as having the potential to cause cancer, increasing attention on the need for diesel emission control, necessary measure for public health protection. 

Diesel Pollution Solutions Helps You Comply With PSIP Testing

DPS Fleet

California is serious about keeping its air clean and is constantly acting towards improving freight performance and transitioning to zero-emission equipment. Two programs, conducted by California Air Resources Board (CARB), detail the owners' responsibilities. Namely, the Periodic Smoke Inspection Program (PSIP) and the Heavy-Duty Vehicle Inspection Program (HDVIP). You can read more about them on our warning page.

As there are specific demands in the PSIP that have to be met, dealing with it on your own can be a complicated process, time and effort consuming.
This is how we can help your company:

  1. We perform rapid and thorough PSIP testings.
  2. We enable you to meet CARB's legal specifications and assist you in facing random audits.
  3. We make it possible for you to better organize your business and take control of its development.
  4. We assist you in managing your annual periodic smoke inspections.

PSIP Essential Requirements

  • Who must comply? You have to comply to PSIP if you operate a fleet of two vehicles or more in California.
  • What vehicles are included in the program? The on-road vehicles that qualify for the Periodic Smoke Inspection Program are the heavy-duty diesel-powered ones, GVWR above 14,000 pounds; except for 1998 and older, the GVWR rating is above 6,000 pounds.
  • What vehicles are excepted from the program? Diesel-powered vehicles are exempt for being tested in the first four years of their existence (for example, 2015 engines are exempt until January 1, 2019).

    *To find out details about the vehicles excepted from the Periodic Smoke Inspection Program read CARB's Advisory.

  • When must you test your fleet? The vehicles in your fleet have to be tested each year on or before December 31.
  • What does the test entail? The test determines smoke opacity or the amount of smoke in the exhaust.
  • Test conditions. The smoke opacity test has to comply with the SAE (Society of Automotive Engineers) J1667 specifications and procedures.
  • What standards have to be met? The opacity standards demand 55% opacity for vehicles equipped with pre-1991 engines and 40% opacity for engines made in 1991 or newer.
  • Take measures. The vehicles that display problems must be promptly repaired and retested.
  • Maintain records. The smoke test results, information about repairs, and post-repair tests are recorded and have to be kept for at least two consecutive years.

    *For details about the information that has to be recorded and maintained, consult our digital record keeping page. 

  • Program enforcement. It is important to know that CARB randomly audits fleets, inspection records, and their maintenance. Also, they test a representative sample of vehicles.
  • Penalties. The penalty for neglecting to perform the annual inspection is of $500 for every untested vehicle, per year. The state of California is serious about its environmental protection regulations and heavy fines are issued monthly for non-compliance. You can consult CARB's case settlement page to find out details. 

Diesel Pollution Solutions' Unique Smoke Inspection Service

Conformity to PSIP's requirements certifies your fleet is risk-free. Also, correct maintainance extends your vehicles' lives. You avoid costly repairs and penalties and you contribute to cleaner air.

Diesel Pollution Solutions' PSIP testing advantages are:

  • The same testing equipment as CARB uses, the Red Mountain diesel smoke opacity tester. That is how we can be sure our tests results match the outcome of official ones.
  • CCDET-certified staff, as CARB demands.
  • Certificate issuing.
  • Repair and retest services.
  • Digital record keeping.

How is The Snap Idle Test Performed?

We test the smoke opacity of your vehicle by performing a snap idle test or a snap-acceleration test.

  1. The vehicle's wheels are blocked for safety.
  2. We start the truck and heat it up to the temperature of 180 degrees to get the engine warmed up.
  3. We place a probe in the hot exhaust pipe.
  4. Then the driver rapidly speeds up, taking the engine to its maximum RPM.
  5. We check to see how much particulate matter (PM) is coming out of the exhaust pipe.
  6. If your vehicle does not pass the test, we can help you with repairs and retest.
  7. We print out a certificate.

Take Advantage of Our Overall Solutions

We don't cover just one aspect of the activities necessary to keep your fleet sustainable. Diesel Pollution Solutions' goal is to help you through the whole mission to comply. We will help you with:

  • Registration.
  • DPF retrofits.
  • DPF cleaning.
  • Overall emission solutions.
  • Certifications for diesel-powered vehicles.

Frequently Asked Questions