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MontanaSB 43369th Legislature, Regular Session (2025)Senate

Revise right-of-way laws for roundabouts

Sponsored By: Theresa Manzella (Republican)

Became Law

Highways and Roads

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Bill Overview

Analyzed Economic Effects

2 provisions identified: 0 benefits, 0 costs, 2 mixed.

One-way road signs and driving rules

The state or local road agency can post roads or lanes as one-way. They must use official traffic signs. On posted one-way roads, you may drive only in the marked direction.

Roundabout rules for drivers and towing rigs

In roundabouts, you must drive to the right of the island or center. Vehicles already in the roundabout have the right-of-way. Approaching drivers must yield. Do not enter in a way that interferes with a towing vehicle entering at the same time. On multi-lane approaches, a towing vehicle may leave its lane with signals. You must yield and not pass it. If two towing vehicles arrive together, the one on the left goes first.

Sponsors & Cosponsors

Sponsor

  • Theresa Manzella

    Republican • Senate

Cosponsors

  • Kenneth Bogner

    Republican • Senate

  • Neil Duram

    Republican • House

Roll Call Votes

All Roll Calls

Yes: 343 • No: 4

Senate vote • 4/11/2025

Do Concur

Yes: 98 • No: 1

Senate vote • 4/10/2025

Do Concur

Yes: 99 • No: 0

Senate vote • 3/6/2025

Do Pass

Yes: 48 • No: 1

Senate vote • 3/5/2025

AMD-SB0433.001.001 Manzella D/PASS

Yes: 50 • No: 0

Senate vote • 3/5/2025

Do Pass As Amended

Yes: 48 • No: 2

Actions Timeline

  1. Chapter Number Assigned

    5/8/2025Senate

  2. Signed by Governor

    5/5/2025Senate

  3. Transmitted to Governor

    4/25/2025Senate

  4. Signed by Speaker

    4/25/2025House

  5. Signed by President

    4/21/2025Senate

  6. Returned from Enrolling

    4/13/2025Senate

  7. Sent to Enrolling

    4/11/2025Senate

  8. 3rd Reading Concurred

    4/11/2025House

  9. 2nd Reading Concurred

    4/10/2025House

  10. Committee Report--Bill Concurred

    3/29/2025House

  11. Committee Executive Action--Bill Concurred

    3/28/2025House

  12. Hearing

    3/18/2025House

  13. First Reading

    3/17/2025House

  14. Referred to Committee

    3/17/2025House

  15. Transmitted to House

    3/7/2025Senate

  16. 3rd Reading Passed

    3/6/2025Senate

  17. 2nd Reading Passed as Amended

    3/5/2025Senate

  18. 2nd Reading Motion to Amend Carried

    3/5/2025Senate

  19. Fiscal Note Printed

    3/3/2025Senate

  20. Fiscal Note Unsigned

    3/3/2025Senate

  21. Fiscal Note Received

    3/3/2025Senate

  22. Committee Report--Bill Passed

    3/1/2025Senate

  23. Committee Executive Action--Bill Passed

    2/28/2025Senate

  24. Fiscal Note Requested

    2/25/2025Senate

  25. Hearing

    2/25/2025Senate

Bill Text

  • Enrolled

    4/12/2025

    PDF

  • As Amended (Version 2)

    3/5/2025

    PDF

  • Introduced

    2/24/2025

    PDF

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