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Pima County, AZ Parking Rules: Commercial & Oversized Vehicles (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Weight threshold
20,000 lbs GVWR
Where it applies
Residential-zoned county right-of-way
Max fine
$250 per violation
Loading exception
Temporary delivery/service stops allowed

Summary

Trucks and trailers over 20,000 pounds GVWR can't park on county right-of-way next to homes in unincorporated Pima County.

City-specific rules exist: Tucson has its own commercial & oversized vehicles rules that differ from Pima County's county-level regulations. If you live in Tucson, check the city-specific page instead.

It is unlawful for any person to park or leave any vehicle having a total gross vehicle weight rating in excess of twenty thousand (20,000) pounds, including, but not limited to, trucks, truck tractors, road tractors, trailers, semi-trailers, vehicle transporters, or any combination of such vehicles, attended or otherwise, occupied or unoccupied, on dedicated Pima County road right-of-way within or contiguous to land zoned or used primarily for single family or multi-family residential uses.

C.   Notwithstanding the prohibition in Section 10.40.050(B) above, a vehicle restricted by that subsection may temporarily park on dedicated Pima County right-of-way to perform the following activities, except that upon completion of such activity the vehicle must be promptly removed.

1.   Deliver, pickup, load or unload merchandise, materials, or equipment, including furniture and other household goods; or

2.   Provide construction, repair, or similar services to a property or utility.

D.   For purposes of this section, the term "dedicated Pima County road right-of-way" shall mean right-of-way dedicated into the Pima County Highway Maintenance System by a Road Establishment or Memorandum of Acceptance as approved by the Board of Supervisors. (Ord. 2018-25 § 1 (part), 2018: Prior code § 35.32.060)

Source: Pima County CodeView official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-64: Contains Supplement, with local legislation through Ordinance 2026-9, passed 7-28-2026, current through 7-28-2026).

Full Breakdown

Pima County Code § 10.40.050(B) bars parking or leaving any vehicle with a gross vehicle weight rating over 20,000 pounds, trucks, truck tractors, road tractors, trailers, semi-trailers or vehicle transporters, on dedicated county road right-of-way within or next to land zoned or used for single-family or multi-family residential use. A narrow exception under § 10.40.050(C) lets such a vehicle stop briefly to load, unload or deliver goods, or to provide construction or utility service, but it must be removed promptly once that work is done. Applies only in unincorporated areas; Tucson, Marana, Oro Valley, Sahuarita and South Tucson set their own rules.

Violations & Fines

Civil traffic violation under § 10.40.070; fine of up to $250 per violation.

Frequently Asked Questions

Can a semi-truck park overnight on my residential street in unincorporated Pima County?
No. Vehicles over 20,000 lbs GVWR can't park on county right-of-way in or next to residential-zoned land under § 10.40.050(B).
Can a delivery truck stop briefly on my street?
Yes, § 10.40.050(C) allows temporary stops to load, unload or deliver, or to perform construction/utility work, if the truck leaves promptly after.

Sources & Official References

Other rules in Pima County

All Pima County rules

Compare Pima County to another location·View the Arizona parking rules overview

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