Time Running out for CARB Compliance on Trailer Aerodynamics

October 2012, - Feature

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Jan. 1, 2013, will bring heavy fines for truckers who cross into California without SmartWay verified aerodynamic devices such side skirts or boat tail fairings that improve fuel economy 4% to 5% on their 53-foot or longer box and refrigerated trailers.

"The clock is ticking for compliance," says Randy Rhondeau, air pollution specialist for California's Air Resources Board. "Fleets and owner-operators who travel into California must have aerodynamic devices, unless they registered with CARB on a phase-in option (which provides an alternate compliance schedule)."

If you're pulled over for non-compliance, the owner of the tractor-trailer can be cited $1,000 per day, Rhondeau says.

"The driver of the tractor-trailer is not off the hook either - that person can be fined $1,000 a day as well. Fines can increase to $10,000 per day for egregious, repeat offenders."

Rhondeau said ignorance is not bliss. "Information has been out there for quite some time, so if someone comes in and pleads ignorance, it's not going to hold water. If we catch violators, they're getting a citation."

According to Sean Graham, president of Freight Wing, makers of SmartWay-verified trailer side skirts and gap fairings, the CARB deadline is creating a dash for compliance. "We're fielding a lot of calls asking about what's needed," Graham says.

For fleets needing numerous trailers outfitted before the deadline, Graham said Freight Wing has put together mobile installation teams to help customers with fitments.

While the CARB mandate might seem to be heavy-handed government at work, Graham said that in this case in particular, aerodynamic fairings on trailers have a very fast payback.

"We've worked with many large fleets which have documented real-world fuel savings of up to 4% with our skirts," he said. "In testing, at sustained speeds, our SAE testing has shown up to a 7% improvement. If you do the math, our skirts can have a payback in as little as 35,000 miles of trailer utilization."

Low rolling resistance tires can improve fuel efficiency as well, but SmartWay verified tires cannot be used to help meet the 4% to 5% requirement. Nevertheless they will add an additional 3% improvement for both the tractor and trailer. SmartWay verified tires won't be required on 2010 and older box trailers until January 2017.

More info On CARB Trailer Aerodynamics

According to Rhondeau, owners, drivers, fleet operators, California-based brokers, California-based shippers and motor carriers should be fully aware of all the rules.

CARB will allow a one-time per fleet per year (one tractor) exemption into the state for a trucking company or owner-operator, but the request must be to the CARB via an email or written request and approved before entering California.

In addition, if registered with CARB, local haul 53-foot trailers are exempt from the aerodynamic requirements of the rule, but they must not go beyond 100 miles from their home base. Empty trailers are also exempt. Short haul tractors and the trailers they pull are exempt, but the tractor must be entered into CARB's database and tractor mileage must be 50,000 miles or lower per year.

For complete information on rules go to:

CARB website:

CARB Truck Stop on the website:

CARB Greenhouse Gas Tractor-Trailer Program:


  1. 1. Garen [ December 25, 2013 @ 11:44AM ]

    Caligornia is so fucken dum stupied and gridest state don't care for anything becide giving middle class hard time
    Let them upgrade the cargo ships and trains R/R as wells before hitings on trucks
    Soon California well move there cargo with horses and dunkeys
    If they give extension for another 2 years everyone well change there trucks
    Otherwise it well get worse

  2. 2. Steve [ March 15, 2015 @ 07:28AM ]

    The next thing CARB will do is try and control backyard BBQs !

  3. 3. HOSViolator [ November 09, 2015 @ 02:11PM ]

    With a new regulation being passed every day it's impossible to keep up with all the BS they pass. So if you don't know you don't know. Who gives a fvk how long the info has been there. By that logic everybody should know everything.
    And the fines are as ridiculous as the rules.

  4. 4. GARRY MEYER [ January 28, 2016 @ 10:59PM ]

    New Law - All donkeys and horses must have running lights and working brake lights. The eye balls must be removed to install headlight bulbs. The huffs will have to be no less then 30/32.

  5. 5. GARRY MEYER [ January 01, 2017 @ 08:03PM ]


  6. 6. Brian [ September 12, 2017 @ 03:00PM ]

    Seriously? For freaking DRY VANS?


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