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Weld County, CO Mobility & Curb Rules: Bike Lane Rules (2026)

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

Key Facts

Bike-path sign violation
$15 + $17 fine, Sec. 109(11)
Safety zone fine
$30 + $34 for same offense
Passing cyclist improperly
$100 + $21 and 4 points
Offense class
Class B (path) or Class A (passing)
Adopting authority
2020 Model Traffic Code, Sec. 6-1-10

Summary

Weld County enforces bicycle-path rules through the state's 2020 Model Traffic Code, which it adopts by reference for every county-maintained street. Riding past an official sign directing bicycles onto a marked path, or a driver improperly passing a cyclist on the left, both draw a set fine under Appendix 6-A to the county's traffic ordinance, payable the same way a speeding ticket is.

City-specific rules exist: Greeley has its own bike lane rules rules that differ from Weld County's county-level regulations. If you live in Greeley, check the city-specific page instead.

109(11) Failed to Use Bicycle Path When Directed By Official Signs TIB 926 $15 + $17 0 $30 + $34 ... 1003(1)(b) Passing Bicycle on Left Improperly TIA 192 $100 + $21 4 $200 + $42 ... The Fine Schedule found at Appendix 6-A to this Chapter shall be valid and enforceable for all corresponding offenses adopted in this Article.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Charter and County Code: Supplement 95).

Full Breakdown

' Appendix 6-A lists a specific line for bicycle-path offenses: Section 109(11), 'Failed to Use Bicycle Path When Directed By Official Signs,' a Class B traffic infraction carrying a base fine and surcharge of $15 plus $17, rising to $30 plus $34 in a posted safety zone. The same appendix separately fines a driver for '1003(1)(b) Passing Bicycle on Left Improperly,' a Class A infraction carrying $100 plus $21 and 4 points, doubling to $200 plus $42 in a safety zone, which is the county's mechanism for punishing a car that squeezes a cyclist rather than passing with adequate clearance.

Because these offenses are Model Traffic Code violations, not local misdemeanors, they run through Weld County Court under the Section 6-1-40 traffic-infraction procedure: an officer can leave a penalty-assessment notice on an unattended vehicle, and the registered owner is presumed the offender absent other evidence.

Violations & Fines

Failing to use a marked bicycle path when directed by an official sign is a Class B traffic infraction, fined $15 plus $17 ($30 plus $34 in a posted safety zone). Passing a cyclist improperly on the left is a Class A infraction carrying $100 plus $21 and 4 points against a driver's license, doubling in a safety zone.

Frequently Asked Questions

What's the fine for not using a bike path in Weld County?
Section 109(11) of the Model Traffic Code, adopted into Weld County's Appendix 6-A Fine Schedule, makes failing to use a marked bicycle path when directed by an official sign a Class B traffic infraction. The base fine and surcharge total $15 plus $17, and the fine rises to $30 plus $34 if the violation happens in a posted safety zone.
What happens if a driver passes a cyclist too closely in Weld County?
That's cited under Section 1003(1)(b), 'Passing Bicycle on Left Improperly,' listed in Appendix 6-A as a Class A traffic infraction. It carries a $100 plus $21 fine and 4 points against the driver's license, both of which double to $200 plus $42 in a posted safety zone.
Does Weld County have its own bike-lane law, or does it just follow the state?
The county adopts the state's Model Traffic Code by reference under Section 6-1-10 for every county-maintained street, but sets its own fine schedule in Appendix 6-A for the resulting offenses, including bicycle-path and passing violations, rather than defaulting to the general state penalty in every case.

Sources & Official References

Other rules in Weld County

Fence Regulations: Height LimitsSome RestrictionsE-Bike ClassesLight RestrictionsNoise Ordinances: Barking DogsSome RestrictionsNoise Ordinances: Decibel LimitsSome RestrictionsNoise Ordinances: Vehicle NoiseSome RestrictionsParking Rules: Loading ZonesSome RestrictionsParking Rules: EV ChargingFew Restrictions

All Weld County rules

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Bike Lane Rules in Cities Across Weld County

Greeley, CO