HB 2134 Washington House · 2025-2026 Regular Session

Concerning regional transportation plans, of regional transportation planning organizations containing certain counties, providing for reductions in greenhouse gas emissions and vehicle miles traveled.

HB 2134 requires regional transportation planning organizations (RTPOs) serving specific counties to include measurable reductions in greenhouse gas emissions and vehicle miles traveled (VMT) in their transportation plans. It applies only to counties meeting strict criteria: those with high population density (100+ people/sq mi, 200,000+ population), river-bordering counties with growth rates ≥1.65%, or counties west of the Cascades with ≥130,000 residents. The bill mandates RTPOs to develop integrated regional plans that prioritize cost-effective projects, coordinate across county lines, and include financial strategies, while requiring biennial plan reviews. These plans must balance regional mobility with climate goals, focusing on existing infrastructure efficiency and transportation demand management.

Bill status in committee 1 of 4 stages cleared

Introduction

Dec 2025

Committee Review

Floor Vote

Governor

Introduced Dec 11, 2025 Last action Feb 19, 2026

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What changed between versions

Bill → Substitute Bill · 6 edits

MODERATE

The bill was renumbered and its sponsor list was updated to reflect committee assignment. The most significant change is that the requirement for regional transportation plans to include greenhouse gas and vehicle miles traveled reduction strategies is no longer tied to specific population density or growth rate thresholds. Instead, the bill now defers to a separate statute (RCW 36.70A.095) to determine which counties must comply, simplifying the criteria and centralizing the eligibility rules elsewhere in the code.

Scope change

The bill's applicability changed from a fixed set of counties based on population and growth metrics to a dynamic list defined by a reference to another statute (RCW 36.70A.095).

ELIGIBILITY

Removed specific population density and growth rate thresholds for counties required to include emissions reduction strategies in their transportation plans.

Added a reference to RCW 36.70A.095 to determine which counties must comply with the emissions reduction requirements.

Added a rule stating that if a county is in two regional planning organizations, the stricter requirements apply to the organization with the larger population.

TECHNICAL

Updated the bill number from H-2504.1 to H-3286.1 and changed the title from 'House Bill' to 'Substitute House Bill'.

Changed the sponsor listing to indicate the bill was originally sponsored by specific representatives but is now being handled by the House Transportation committee.

TIMELINE

Updated the 'Read First Time' date from 01/12/26 to 01/30/26.

Floor votes

How they voted

No floor votes recorded yet.

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Jan 30, 2026

Committee

Referred to Rules 2 Review.

lower

Jan 28, 2026

Lower · Passed

Minority; without recommendation.

lower

Jan 28, 2026

Lower · Passed

Minority; do not pass.

lower

Jan 28, 2026

Lower · Passed

Executive action taken in the House Committee on Transportation at 4:00 PM.

lower

Jan 19, 2026

Lower · Passed

Public hearing in the House Committee on Transportation at 4:00 PM.

lower

1 primary · 8 co-sponsors