SB 433 Montana Senate · 2025 Regular Session

Revise right-of-way laws for roundabouts

SB 433 revises right-of-way laws for drivers navigating roundabouts in Montana. It establishes that vehicles already in a roundabout have the right-of-way over those approaching it, which must yield. The bill creates specific provisions for towing vehicles, allowing them to deviate lanes for safe passage and requiring other drivers to yield and not pass them within or approaching a roundabout. If two towing vehicles enter a roundabout simultaneously, the vehicle to the left is granted the right-of-way.
Bill status signed all 5 stages cleared
Introduction
Feb 2025
Committee Review
Mar 2025
Senate Passage
Apr 2025
House Passage
Apr 2025
Signed into Law
May 2025
Introduced Feb 24, 2025 Signed May 8, 2025
Maddy AI version diff · 4 comparisons

What changed between versions

SB0433_X(2).pdf SB0433_X(3).pdf · 1 edit
MINOR
The bill text shows minor formatting and spacing adjustments rather than substantive policy changes. The title, section references, and bill number remain consistent, with only whitespace and line break variations between versions. No new definitions, funding amounts, dates, or eligibility criteria were added or removed.
TECHNICAL

Minor spacing and line break adjustments in the title and signature sections without affecting the bill's legal content or requirements

Floor votes · Senate Mar 7, 2025 · House Apr 11, 2025

How they voted

481
Passed · 1 other
Total votes 50
Mar 7, 2025
D Democratic18
17 Yea 1
94% Yea
R Republican32
31 Yea 1 Nay
96% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
44
Key actions
9
Committee
6
May 5, 2025
Signed into law
(S) Signed by Governor
upper
Apr 25, 2025
Lower · Passed
(H) Signed by Speaker
lower
Apr 21, 2025
Upper · Passed
(S) Signed by President
upper
Apr 11, 2025
House · Passed
House Vote: pass (98-1-1)
house
Mar 29, 2025
Lower · Passed
(H) Committee Report - (H) Transportation
lower
Mar 28, 2025
Lower · Passed
(H) Committee Executive Action - (H) Transportation
lower
Mar 17, 2025
Committee
(H) Referred to Committee - (H) Transportation
lower
Mar 7, 2025
Senate · Passed
Senate Vote: pass (48-1-1)
senate
Mar 1, 2025
Upper · Passed
(S) Committee Report - (S) Highways and Transportation
upper
Mar 1, 2025
Upper · Passed
(S) Committee Executive Action - (S) Highways and Transportation
upper
Feb 25, 2025
Committee
(S) Referred to Committee - (S) Highways and Transportation
upper
Feb 24, 2025
Introduced
(S) Introduced
upper
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Theresa Manzella
Theresa Manzella
RRepublican
MT
44