California Smog Regulations

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We will continually update this page with valuable information regarding the ever-changing Smog Regulation Laws in California. You can also find the latest changes to the Hour of Service (HOS) laws and BIT inspections.

Truck and Bus Regulation Amendments Approved in 2014

This summary describes amendments to the flexibility options of the Truck and Bus Regulation that were approved by the Air Resources Board (ARB/Board) on April 25, 2014. Owners that do not report to use flexibility options must comply with the [...]

2015-05-19T14:36:17-08:00May 13th, 2014|

Compliance Status of a TRU or Company That Owns TRUs

Under California law, the business entity that hires a carrier to transport perishable goods on California highways or railways must require the carriers they hire to only dispatch TRUs that comply with the in-use performance standards of California's TRU Regulation. [...]

2015-05-19T14:36:18-08:00January 8th, 2013|

Facts About Low Rolling Resistance Tire Information

The California Air Resources Board (ARB) approved the Tractor-Trailer Greenhouse Gas regulation to significantly reduce greenhouse gas emissions produced by certain heavy-duty tractor-trailers. Here's a PDF from the California Environmental Protection Agency that provides more detailed information. Low Rolling Resistance [...]

2015-05-19T14:36:18-08:00September 28th, 2012|

CARB Deadlines – January 1, 2012

Important CARB Deadlines Approaching To comply with the Truck and Bus Rule, by 1/1/2012, you must either: 1. Meet the BACT schedule (all 1996-1999 trucks meet PM BACT) THE BACT SCHEDULE 2. The phase in schedule (30% of all trucks, [...]

2015-05-19T14:36:18-08:00December 6th, 2011|

Upcoming California CARB Deadlines

Truck and Bus Rule - All retrofits purchased prior to 5/1/2011 must be installed by 10/1/2011 in order to qualify for the early retrofit credit. Truck and Bus Rule - In general, by 1/1/2012 fleets larger than 3 power units [...]

2015-05-19T14:36:18-08:00September 6th, 2011|

Truck Idling Law for California

Pursuant to state regulation, operators of diesel-fueled trucks, with a gross vehicle weight rating greater than 10,000 pounds, shall not idle for more than 5 minutes when stopped within California’s borders. Currently, there is an exemption for sleeper berth trucks, which [...]

2015-05-19T14:36:18-08:00July 20th, 2011|

Fleet Calculator

The California Air Resources Board (ARB or Board) staff has posted the fleet calculator to assist fleet owners in evaluating various compliance strategies to comply with the Truck and Bus Rule. The compliance tool is an Excel spreadsheet that allows [...]

2015-05-19T14:36:19-08:00February 1st, 2011|

TRUCRS Online Reporting System

TRUCRS online reporting systemis now available for fleets to submit their fleet information. This includes fleet information for the Truck and Bus Regulation and the Heavy Duty Vehicle Greenhouse Gas Regulation. Fleets must report agricultural vehicle information by March 31, [...]

2015-05-19T14:36:19-08:00March 24th, 2010|

CTA Members, New CARB website & fact sheet

The California Air Resources Board has created a new website that provides information regarding all on-road environmental rules affecting trucks, including tools for determining which regulations apply to your fleet. You can also find out what kind of funding may [...]

2015-05-19T14:36:19-08:00January 20th, 2009|

Overview of Proposed California Smog Regulations

Proposed Regulation to Reduce Emissions from In-Use On-Road Diesel Trucks and Buses Reducing diesel emissions to protect public health The goal of the proposed regulation is to achieve significant emission reductions which are critical to meeting clean air standards by [...]

2015-05-19T14:36:19-08:00July 13th, 2008|

Smartway Truck/Trailer Frequently Asked Questions

What trucks/trailers are part of the proposed regulation? Currently the regulation only applies to box-type trailers that are 53 ft or longer and long haul tractors that haul the trailers. This equipment must be Smartway equipped. If I am a [...]

2015-05-19T14:36:19-08:00June 12th, 2008|

Assistance For Truck Owners

The Environmental Protection Agency (EPA), has created a website to help truck owners find and secure loans to purchase idling and emission reduction equipment as well as fuel saving technologies. The website is set up in a manner that allows truck [...]

2015-05-19T14:36:19-08:00June 5th, 2008|

California Smog Update

The California Air Resources Board has posted Draft Regulatory Language and the Workshop Presentation for upcoming workshops scheduled for May and June. The proposed AB 32 Heavy-Duty Vehicle Greenhouse Gas Emission Reduction Measure is being developed to reduce greenhouse gas [...]

2015-05-19T14:36:19-08:00May 21st, 2008|

C.A.R.B Proposal for Measure to Reduce Greenhouse Gas Emissions

The California Air Resources Board is currently developing a measure to reduce greenhouse gas emissions from heavy-duty long-haul tractors and trailers. The proposed measure specifically applies to tractors over 33,000 pounds gross vehicle weight that pull 53-foot box-type trailers and [...]

2015-05-19T14:36:20-08:00March 20th, 2008|

Transport Refrigeration Units

Transport Refrigeration Units (TRUs) are refrigeration systems powered by diesel internal combustion engines designed to refrigerate or heat perishable products that are transported in various containers, including semi-trailers, truck vans, shipping containers, and rail cars. Although TRU engines are relatively [...]

2015-05-19T14:36:20-08:00January 20th, 2008|

Smoke Testing Advisory

Attention CTA Members. CTA members who smoke test their own equipment must be certified through that California Council on Diesel Education and Technology (CCDET). ARB policy requires use of CCDET when performing any snap acceleration smoke test for purposes of [...]

2015-05-19T14:36:20-08:00January 12th, 2008|

Sleeper Berth Idling Exemption Removed

All Idling in California to be Limited to Five Minutes in 2008 January 1, 2008 will mark the end of the idling exemption. Previously, idling was allowed for periods of rest or sleep while in a sleeper berth as long [...]

2015-05-19T14:36:20-08:00December 28th, 2007|