How to drive legally in California?

I have a 2011 Freightliner Cascadia and a 2004 53 ft dry van without aerodynamic skirts. I have driven it in California 10 times now, had one inspection and they did not mention that it does not have skirts. Am I correct in thinking that some form of aerodynamics plus low resistance tires is required when driving in California? Maybe inspectors don't care, the ARB have their own inspectors? Or does all of this only apply to carriers registered in California? Do I really need to fly by night when using the part of the federal highway network that goes through California?

Here is what I read:
Source: CARB - OOIDA
2010 or older MY box-type trailers
SmartWay Certified or retrofitted with 5%/4% fuel saving aerodynamic technologies

I am assuming "MY box-type trailer" means dry van..?

 

Bingo

 

I will repeat this again, California can't dictate to other states' registered trucks what they need to enter the state, only the feds can regulate access to other states.

California has a few restrictions which is permitted by the feds, one is based on their adoption of bridge laws. BUT emissions are not permitted as a reason to restrict access to their markets.

 

not a true statement...

 

If you live in California and work at the Port you can drive something from 1980 held together with duct tape and it's all good.

 

All you need for your trailer are two small fins that fit over the top two hinges on either side of the doors and you're compliant.

Just ask a trailer dealer or shop for them.

 

Are you sure of that?

 

Like these thingamajigs.? Can't say I've ever seen them, but also never been west of las Vegas..
Rocketail brand

 

Don't they need to be tested by the manufacturer and be proven to generate at least a 4% or 5% fuel saving, then added to some CARB list of approved aerodynamics?

 

Not that big. These are real small.