SB 1559 Illinois Senate · 104th Regular Session

IDOT-TRAFFIC STUDIES

Summary

Amends the Department of Transportation Law of the Civil Administrative Code of Illinois. Requires the Department of Transportation to conduct a traffic study following the occurrence of any crash involving a pedestrian fatality that occurs at an intersection of a federal or municipal highway.

Issues: ✓ Transportation

Bill status signed all 5 stages cleared

Introduction

Apr 2025

Committee Review

Apr 2025

Senate Passage

May 2025

House Passage

May 2025

Signed into Law

Aug 2025

Introduced Apr 11, 2025 Signed Aug 1, 2025

Maddy AI version diff · 2 comparisons

What changed between versions

Engrossed → Enrolled · 1 edit · Aug 1, 2025

MINOR

The bill text was updated from its 'Engrossed' version to the final 'Enrolled' version, which is the official text signed into law. The changes consist entirely of updating the document header and page footers to reflect this final status, with no alterations to the actual policy language, requirements, or provisions of the bill.

TECHNICAL

The document title was changed from 'SB1559 Engrossed' to 'SB1559 Enrolled' on the first page and in the footers of subsequent pages to indicate the bill has reached its final form.

Floor votes · Senate Apr 11, 2025 · House May 21, 2025

How they voted

52–0

Passed · 6 other

Total votes 58

Apr 11, 2025

D Democratic39

33 Yea 6

84% Yea

R Republican19

19 Yea

100% Yea

Vote distribution

All Yea All Nay Mixed No data

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Amendments

Aug 1, 2025

Signed into law

Governor Approved

upper

May 21, 2025

Upper · Passed

Passed Both Houses

upper

May 21, 2025

Lower · Passed

Third Reading - Short Debate - Passed 111-000-000

lower

Apr 30, 2025

Lower · Passed

Do Pass / Short Debate Transportation: Vehicles & Safety; 012-000-000

lower

Apr 17, 2025

Committee

Assigned to Transportation: Vehicles & Safety

lower

Apr 11, 2025

Committee

Referred to Rules Committee

lower

Apr 11, 2025

Introduced

Arrived in House

lower

Apr 11, 2025

Upper · Passed

Third Reading - Passed; 052-000-000

upper

Apr 10, 2025

Upper · Passed

Senate Floor Amendment No. 2 Adopted; Feigenholtz

upper

Apr 8, 2025

Introduced

Senate Floor Amendment No. 2 Recommend Do Adopt Transportation; 019-000-000

upper

Apr 8, 2025

Introduced

Senate Floor Amendment No. 2 Assignments Refers to Transportation

upper

Apr 3, 2025

Committee

Senate Floor Amendment No. 2 Referred to Assignments

upper

Apr 3, 2025

Introduced

Senate Floor Amendment No. 2 Filed with Secretary by Sen. Sara Feigenholtz

upper

Mar 19, 2025

Upper · Passed

Do Pass as Amended Transportation; 015-000-000

upper

Mar 18, 2025

Upper · Passed

Senate Committee Amendment No. 1 Adopted

upper

Mar 18, 2025

Upper · Passed

Senate Committee Amendment No. 1 Assignments Refers to Transportation

upper

Mar 14, 2025

Committee

Senate Committee Amendment No. 1 Referred to Assignments

upper

Mar 14, 2025

Introduced

Senate Committee Amendment No. 1 Filed with Secretary by Sen. Sara Feigenholtz

upper

Feb 11, 2025

Committee

Assigned to Transportation

upper

Feb 4, 2025

Committee

Referred to Assignments

upper

2 primary · 11 co-sponsors