Jefferson County, CO Parking Rules: Commercial & Oversized Vehicles (2026)
Key Facts
- Size threshold
- 8+ ft wide (incl. bed) or 25+ ft long
- Also covered regardless of size
- Any tractor or semi-trailer
- Exception
- Active loading/unloading only
- Base fine
- $50, escalating to $100
- Impound notice
- 72 hours before towing
- Adopted
- Resolution CC23-211
Summary
Jefferson County bans parking any "Major Motor Vehicle", a truck or trailer 8 feet or more wide, 25 feet or more long, or any tractor-trailer regardless of size, on a county highway except while actively loading or unloading. Section J.1 of the Operation and Parking of Vehicles Ordinance, Resolution CC23-211, makes it a class B traffic infraction.
5. "Major Motor Vehicle" means a Vehicle: a. Eight (8) feet or more in width including the truck bed; and/or b. Twenty-five (25) feet or more in length; and/or c. Regardless of size, a truck tractor, road tractor or semi-trailer. The term "Major Motor Vehicle" shall not include those Vehicles defined as Authorized Emergency Vehicles in Section 42-1-102(6), C.R.S. ... J. Parking Regulations on Highways in Unincorporated Jefferson County. 1. It shall be unlawful for any Person to Park any Major Motor Vehicle upon any Highway in unincorporated Jefferson County, except for the purposes of loading, unloading or other immediate and active use.
Full Breakdown
are excluded. 1 then bars parking such a vehicle on any highway in unincorporated Jeffco "except for the purposes of loading, unloading or other immediate and active use," so a delivery truck can stop to work but not sit curbside afterward. starts at a $50 fine, rising to $75 if unpaid or uncontested and $100 for continued non-response to the Clerk of the Combined Courts' follow-up notice. A truck left in place can be posted with a written notice, and after 72 hours it may be towed and impounded; it will not be released until towing and storage charges are paid, though the owner can request a Sheriff's Office hearing within 10 working days.
The rule applies only to county highways in unincorporated Jeffco, not to private lots, driveways or yards, which fall under the county's separate zoning framework.
Violations & Fines
Parking a qualifying truck, tractor or semi-trailer on a county highway outside active loading or unloading is a class B traffic infraction: a $50 fine that escalates to $75, then $100 for continued non-response. The vehicle can be posted and, after 72 hours, towed and impounded, with release conditioned on paying the towing carrier's storage and towing charges.
Frequently Asked Questions
Can I park my semi-truck on my Jeffco street overnight?
What size truck actually counts as regulated?
Are delivery trucks exempt while making a stop?
What if I leave the truck there after a notice is posted?
Sources & Official References
Other rules in Jefferson County
Compare Jefferson County to another location·View the Colorado parking rules overview
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