republic-os/legislation/us/states/il/104th/sb-1559.md

type, title, description, jurisdiction, legislature, session, identifier, citation, classification, subjects, status, primary_sponsors, version_count, action_count, vote_count, first_action, last_action, source, source_identifier, source_url, source_hash, vintage, source_snapshot, retrieved_at, confidence, tags

type	title	description	jurisdiction	legislature	session	identifier	citation	classification	subjects	status	primary_sponsors	version_count	action_count	vote_count	first_action	last_action	source	source_identifier	source_url	source_hash	vintage	source_snapshot	retrieved_at	confidence	tags
Bill	IDOT-TRAFFIC STUDIES	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.	us/states/il	Illinois General Assembly	104th	SB 1559	Illinois SB 1559 (104th)	bill		enacted	Ann M. Williams Sara Feigenholtz	5	45	6	2025-02-04	2025-08-01	openstates	ocd-bill/f6bd18c4-889e-46bf-859b-fb297e8b4763	https://ilga.gov/Legislation/BillStatus?DocNum=1559&GAID=18&DocTypeID=SB&LegId=160263&SessionID=114	7c2948fd4907df1324302c0e724a7d652b79a4d69ceb6e69e0ceb5caca310d69	2026-07-01	https://data.openstates.org/daily/2026-07-01/public.pgdump	2026-07-06	reported	legislation bill us-il

Illinois SB 1559 (104th) — IDOT-TRAFFIC STUDIES

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.

Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. Introduced (filed) — source
2. Engrossed (committee substitute) — source
3. Senate Amendment 001 (committee substitute) — source
4. Senate Amendment 002 (committee substitute) — source
5. Enrolled (enrolled) — source

Votes

• Transportation — 15–0 (pass) · upper
• Transportation, Amendment 2 — 19–0 (pass) · upper
• Transportation — 15–0 (pass) · upper
• Third Reading — 52–0 (pass) · upper
• Transportation: Vehicles & Safety — 12–0 (pass) · lower
• Third Reading — 111–0 (pass) · lower

Sponsors

• Ann M. Williams — primary (person)
• Sara Feigenholtz — primary (person)
• Anne Stava — cosponsor (person)
• Bradley Fritts — cosponsor (person)
• Jaime M. Andrade, Jr. — cosponsor (person)
• Kelly M. Cassidy — cosponsor (person)
• Margaret Croke — cosponsor (person)
• Martha Deuter — cosponsor (person)
• Matt Hanson — cosponsor (person)
• Michael J. Coffey, Jr. — cosponsor (person)
• Theresa Mah — cosponsor (person)
• Wayne A. Rosenthal — cosponsor (person)
• Will Guzzardi — cosponsor (person)

Timeline

The legislative action history — every referral, reading, and vote.

• 2025-02-04 Filed with Secretary by Sen. Sara Feigenholtz filing
• 2025-02-04 First Reading reading-1
• 2025-02-04 Referred to Assignments
• 2025-02-11 Assigned to Transportation referral-committee
• 2025-03-05 Postponed - Transportation
• 2025-03-14 Senate Committee Amendment No. 1 Filed with Secretary by Sen. Sara Feigenholtz amendment-introduction
• 2025-03-14 Senate Committee Amendment No. 1 Referred to Assignments
• 2025-03-18 Senate Committee Amendment No. 1 Assignments Refers to Transportation
• 2025-03-18 Senate Committee Amendment No. 1 Adopted amendment-passage
• 2025-03-19 Do Pass as Amended Transportation; 015-000-000
• 2025-03-19 Placed on Calendar Order of 2nd Reading March 20, 2025 reading-2
• 2025-04-03 Senate Floor Amendment No. 2 Filed with Secretary by Sen. Sara Feigenholtz amendment-introduction
• 2025-04-03 Senate Floor Amendment No. 2 Referred to Assignments
• 2025-04-08 Senate Floor Amendment No. 2 Assignments Refers to Transportation
• 2025-04-08 Senate Floor Amendment No. 2 Recommend Do Adopt Transportation; 019-000-000
• 2025-04-10 Second Reading reading-2
• 2025-04-10 Senate Floor Amendment No. 2 Adopted; Feigenholtz amendment-passage
• 2025-04-10 Placed on Calendar Order of 3rd Reading April 11, 2025
• 2025-04-11 Third Reading - Passed; 052-000-000 passage, reading-3
• 2025-04-11 Arrived in House introduction
• 2025-04-11 Chief House Sponsor Rep. Ann M. Williams
• 2025-04-11 First Reading reading-1
• 2025-04-11 Referred to Rules Committee
• 2025-04-17 Assigned to Transportation: Vehicles & Safety referral-committee
• 2025-04-30 Do Pass / Short Debate Transportation: Vehicles & Safety; 012-000-000
• 2025-04-30 Placed on Calendar 2nd Reading - Short Debate reading-2
• 2025-04-30 Added Alternate Chief Co-Sponsor Rep. Jaime M. Andrade, Jr.
• 2025-04-30 Added Alternate Chief Co-Sponsor Rep. Matt Hanson
• 2025-04-30 Added Alternate Chief Co-Sponsor Rep. Margaret Croke
• 2025-04-30 Added Alternate Chief Co-Sponsor Rep. Bradley Fritts
• 2025-05-08 Added Alternate Co-Sponsor Rep. Martha Deuter
• 2025-05-09 Added Alternate Co-Sponsor Rep. Will Guzzardi
• 2025-05-09 Added Alternate Co-Sponsor Rep. Theresa Mah
• 2025-05-09 Added Alternate Co-Sponsor Rep. Michael J. Coffey, Jr.
• 2025-05-09 Added Alternate Co-Sponsor Rep. Wayne A. Rosenthal
• 2025-05-16 Second Reading - Short Debate reading-2
• 2025-05-16 Placed on Calendar Order of 3rd Reading - Short Debate
• 2025-05-20 Added Alternate Co-Sponsor Rep. Anne Stava
• 2025-05-21 Third Reading - Short Debate - Passed 111-000-000 passage, reading-3
• 2025-05-21 Passed Both Houses
• 2025-05-21 Added Alternate Co-Sponsor Rep. Kelly M. Cassidy
• 2025-06-18 Sent to the Governor executive-receipt
• 2025-08-01 Governor Approved executive-signature
• 2025-08-01 Effective Date January 1, 2026
• 2025-08-01 Public Act . . . . . . . . . 104-0110 became-law

Source

OpenStates / OpenCivicData bulk snapshot 2026-07-01; origin ocd-bill/f6bd18c4-889e-46bf-859b-fb297e8b4763. Confidence: reported (aggregated from official Illinois legislature records).