Part ofTransportation →

AB 1145CALIFORNIASession 20252026

California AB 1145 requires Caltrans to justify rejections of local traffic ordinances with cost-benefit analysis

Original title: Vehicles: local regulation: Department of Transportation.

August 24, 2026

Transportation Local Government State Regulation Traffic Management DepartmentofTransportation Vehicles localregulation

Track this bill to get notified when it advances a stage. One tap to stop, anytime.

Where This Stands

Currently Unknown. The next step in the legislative lifecycle is Introduced.

Version history & redline

5 versions on file

Official version history is partial: 5 linked texts are unavailable or incomplete. Source links remain available below.

Comparing 04/21/25 - Amended Assembly → 05/23/25 - Amended Assembly

removed addedOfficial text

The text diff for this stage has not been computed yet.

OpenStates mirror retained for redline only; official linked text was unavailable

Redline computed from the official version text (record lane).View this version →

The Frame

What this does

This change increases transparency and accountability for local governments seeking to regulate state highways, as it forces the state to explain its reasoning and consider financial impacts when blocking local traffic rules.

Who is mentioned in the record

Potentially affected actors named in the source documents. Mention is not a position.

Department of Transportation

The department must now perform cost-comparison analyses and provide written justifications for rejections of local ordinances.

local authorities

Local governments receive more transparency and a formal justification process when their proposed traffic ordinances are reviewed by the state.

What changed

Last recorded activity August 24, 2026.

What's next

Introduced.

Summary

This bill requires the California Department of Transportation (Caltrans) to perform a cost-comparison analysis when reviewing local traffic ordinances and to provide written justifications if they reject a local proposal. It mandates that Caltrans evaluate the proposed ordinance against alternative solutions before issuing a decision.

Key Facts

You don't have to trust us. Each fact below is taken straight from the official document - click any one to see the exact passage, highlighted in the original.

Why It Matters

Frequently Asked Questions

Does this bill change what local governments can regulate?

No, it does not change the scope of what can regulate; it changes the process Caltrans must follow when reviewing those regulations.

What happens if Caltrans rejects a local traffic rule?

Under this bill, Caltrans must provide the local authority with a written explanation and justification for the rejection.

News Coverage

No news coverage found yet. Articles are indexed twice daily.

Discoveries

Patterns POLISCOPE noticed across the record. These are observations to investigate, not conclusions.

policy shift90% confidence

Increased Administrative Burden on State Agency

The bill shifts the burden of proof to the state agency by requiring written justifications for rejections, a departure from standard discretionary approval processes.

Department of Transportation

Connected Entities

organizationDepartment of Transportation“The state agency responsible for reviewing and approving local traffic ordinance”Map →

Sources

Open source document

openstates.org

Analysis Score

0–100

Significance65
How much this matters to a regular citizen
Controversy20
Intensity of disagreement among stakeholders
Entertainment5
Compellingness for a non-policy-wonk reader
Buzz15
Current news / social attention level

Publisher tools