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Old 07-07-2016, 10:54 AM   #1
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CA particulate filter retrofit

I'm considering converting a vintage school bus into a hospitality vehicle. Although I wouldn't have actual passengers I would have people on it eating when stationary. I think it would fall under a limo/party bus designation here in CA. Will I be required to make the bus comply with the diesel particulate filter (DPF) retrofit requirements?
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Old 07-07-2016, 12:25 PM   #2
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I'm considering converting a vintage school bus into a hospitality vehicle. Although I wouldn't have actual passengers I would have people on it eating when stationary. I think it would fall under a limo/party bus designation here in CA. Will I be required to make the bus comply with the diesel particulate filter (DPF) retrofit requirements?
Yes, C.A.R.B states only Motorhome/RV's are exempt.
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Old 07-07-2016, 01:11 PM   #3
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Thanks for the info. I read that there is some sort of weight limit. I.e., all vehicles with a GVW over 26000lbs are captured under the law. Is that correct?
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Old 07-07-2016, 01:20 PM   #4
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Yup, 26,000 is the weight range which separates commercial and non-commercial vehicles. This would exempt a diesel pickup truck. There may be other qualifiers or exemptions but basically only RVs are exempt even though they can be over 26k because they've always been understood to be private vehicles not commercial and because they're most popular with retirees who vote!
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Old 07-07-2016, 02:29 PM   #5
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Yup, 26,000 is the weight range which separates commercial and non-commercial vehicles. This would exempt a diesel pickup truck. There may be other qualifiers or exemptions but basically only RVs are exempt even though they can be over 26k because they've always been understood to be private vehicles not commercial and because they're most popular with retirees who vote!
Actually ALL pickup trucks in Ca are considered commercial & have to meet C.A.R.B regs UNLESS they are 1975 or older. & I found out that any truck with a flatbed are technically supposed to stop at truck scales.
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Old 07-07-2016, 03:26 PM   #6
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Actually ALL pickup trucks in Ca are considered commercial & have to meet C.A.R.B regs UNLESS they are 1975 or older. & I found out that any truck with a flatbed are technically supposed to stop at truck scales.
Wow! Learn something every day! That's really gotta suck for private vehicle owners because either way it's a big hit to the wallet.

Scales / inspection stations vary requirements according to state but it wouldn't surprise me in California... Of course I think its a little unAmerican the way some of these states are basically operating customs checkpoints just to cross state lines yet we can't secure our nation's international borders. But I don't want to get all political about it.
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Old 07-07-2016, 06:02 PM   #7
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Wow! Learn something every day! That's really gotta suck for private vehicle owners because either way it's a big hit to the wallet.

Scales / inspection stations vary requirements according to state but it wouldn't surprise me in California... Of course I think its a little unAmerican the way some of these states are basically operating customs checkpoints just to cross state lines yet we can't secure our nation's international borders. But I don't want to get all political about it.
Let me backup for a moment, Ca considers all trucks commercial for registration purposes, they didn't start smog checking diesels 14000lbs & under until I think around 2010,But they started at 96 & up I believe, some of my memory could be off, also they must have their original equipment installed or any aftermarket add ones must have a C.A.R.B. #.
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Old 07-07-2016, 07:22 PM   #8
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So not necessarily DPF unless that was OE for the model year? That's at least more reasonable I think. I was just thinking any small business owner with a couple of trucks would rather throw on the towel than pay what it costs to retrofit every diesel with an after-treatment system. So many landscapers and small time household movers just closing up shop because they can't afford new trucks but can't afford to 'fix' their old ones but surely they're not 40+ years old! Then you have folks who may have a dually pickup that is diesel to pull their boat or fifth wheel travel trailer, that'd be daunting to have to spend what one of those costs today just to keep enjoying your vacation.
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Old 07-07-2016, 08:40 PM   #9
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I have a friend who's family has owned and operated a small tow company here in sunny Kalifornia since 1949. They have 3, medium duty trucks, two are flat beds and the third is a stump puller. All the trucks are just over ten years old and will have to be retro fitted by years end to the tune of $15,000 each. One of the trucks had been given a 2 year extension for retrofit (for a fat fee of course) and will have to be retired at the end of the 2 years. Needless to say, their business is up for sale. Jack
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Old 07-07-2016, 09:48 PM   #10
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I have a friend who's family has owned and operated a small tow company here in sunny Kalifornia since 1949. They have 3, medium duty trucks, two are flat beds and the third is a stump puller. All the trucks are just over ten years old and will have to be retro fitted by years end to the tune of $15,000 each. One of the trucks had been given a 2 year extension for retrofit (for a fat fee of course) and will have to be retired at the end of the 2 years. Needless to say, their business is up for sale. Jack
Well that's pretty crazy. Is it possible that they could have a GVW of over 26K?

Diesel vehicles of model year 1997 or older are exempt from smog testing. 1975 and older for gas. I own one of each and have owned several more in the last 10 years. But apparently any year diesel must have a DPF if it is over 26K?
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