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SB 1559104th
bill

104th General Assembly (2025 to 2026) · State Senate bill

SB 1559

IDOT-TRAFFIC STUDIES

Sent to Governor Last action August 1, 2025: Public Act . . . . . . . . . 104-0110

Official bill page and text: ilga.gov

Sponsors 13

Prime sponsors
Ann M. Williams, Sara Feigenholtz
Cosponsors (11)
Anne Stava, Bradley Fritts, Jaime M. Andrade, Jr., Kelly M. Cassidy, Margaret Croke, Martha Deuter, Matt Hanson, Michael J. Coffey, Jr., Theresa Mah, Wayne A. Rosenthal, Will Guzzardi

Status

Sent to Governor as of August 1, 2025. The 104th General Assembly serves until the 105th convenes on January 13, 2027.

Referred to: House Transportation: Vehicles and Safety, Senate Transportation (from the official referral record)

Roll-call votes 6

May 21, 2025House of RepresentativesThird ReadingPassed111-0

yes (111) Mussman, Guerrero-Cuellar, Ness, Guzzardi, Andrade, Niemerg, Haas, Avelar, Olickal, Halbrook, Benton, Ortíz, Aarón, Hammond, Blair-Sherlock, Rashid, Hanson, Briel, Reick, Harper, Buckner, Rita, Hauter, Bunting, Rosenthal, Hernandez, Barbara, Cabello, Ryan, Hernandez, Lisa, Canty, Sanalitro, Hernandez, Norma, Cassidy, Chung, Schmidt, Hoffman, Coffey, Schweizer, Huynh, Costa Howard, Severin, Jacobs, Crawford, Sheehan, Jiménez, Crespo, Slaughter, Johnson, Croke, Smith, Jones, Davidsmeyer, Sosnowski, Katz Muhl, Davis, Jed, Spain, Keicher, Stava-Murray, Kelly, Davis, Will, Kifowit, Deering, Stuart, La Ha, Delgado, Swanson, LaPointe, DeLuca, Lilly, Deuter, Tarver, Mah, Didech, Tipsword, Manley, Du Buclet, Ugaste, Mason, Elik, Vella, Mayfield, Evans, Walsh, McCombie, Faver Dias, Weaver, McLaughlin, Ford, Weber, Meier, West, Meyers-Martin, Fritts, Wilhour, Miller, Gabel, Williams, Ann, Moeller, Gill, Williams, Jawaharial, Moore, Gong-Gershowitz, Windhorst, Morgan, González, Edgar, Yang Rohr, Morris, Gordon-Booth, Welch, Moylan, Grant, Grasse

excused (7) Ammons, Scherer, Hirschauer, Davis, Lisa, Stephens, Syed, Friess

Official roll call

April 30, 2025House of RepresentativesDo PassPassed12-0

yes (12) Benton, Harry, Andrade Jr., Jaime M, Deering, Regan, Croke, Margaret, González Jr., Edgar, Fritts, Bradley, Hanson, Matt, Guerrero-Cuellar, Angelica, Kelly, Michael J, Hernandez, Barbara, Stephens, Brad, Rosenthal, Wayne A

Official roll call

April 11, 2025State SenateThird ReadingPassed52-0

yes (52) Joyce, Faraci, Anderson, Sims, Koehler, Feigenholtz, Lewis, Fine, Arellano, L., Syverson, Lightford, Fowler, Balkema, Tracy, Loughran Cappel, Glowiak Hilton, Belt, Turner, D., Guzmán, Bryant, Turner, S., McClure, Halpin, Castro, Ventura, Morrison, Harris, N., Cervantes, Villa, Murphy, Harriss, E., Chesney, Villanueva, Peters, Hastings, Collins, Plummer, Hills, Cunningham, Walker, Porfirio, Holmes, Curran, Wilcox, Preston, DeWitte, Harmon, Rezin, Johnson, Edly-Allen, Rose, Ellman

not voting (7) Simmons, Aquino, Stadelman, Martwick, Villivalam, Hunter, Jones, E.

Official roll call

April 8, 2025State SenateDo Pass, Amendment 2Passed19-0

yes (19) Ellman, Laura, DeWitte, Donald P, Fowler, Dale, Feigenholtz, Sara, Harriss, Erica, Glowiak Hilton, Suzy, Johnson, Adriane, Hills, Darby A, Lewis, Seth, Joyce, Patrick J, Peters, Robert, Murphy, Laura M, Simmons, Mike, Porfirio, Mike, Ventura, Rachel, Stadelman, Steve, Villivalam, Ram, Villanueva, Celina, Wilcox, Craig

Official roll call

March 18, 2025State SenateDo PassPassed15-0

yes (15) Ellman, Laura, DeWitte, Donald P, Fowler, Dale, Feigenholtz, Sara, Harriss, Erica, Hills, Darby A, Joyce, Patrick J, Johnson, Adriane, Murphy, Laura M, Lewis, Seth, Porfirio, Mike, Stadelman, Steve, Simmons, Mike, Villivalam, Ram, Villanueva, Celina

not voting (4) Glowiak Hilton, Suzy, Hunter, Mattie, Peters, Robert, Wilcox, Craig

Official roll call

March 18, 2025State SenateDo Pass, Amendment 1Passed15-0

yes (15) Ellman, Laura, DeWitte, Donald P, Fowler, Dale, Feigenholtz, Sara, Harriss, Erica, Hills, Darby A, Joyce, Patrick J, Johnson, Adriane, Murphy, Laura M, Lewis, Seth, Porfirio, Mike, Stadelman, Steve, Simmons, Mike, Villivalam, Ram, Villanueva, Celina

not voting (4) Glowiak Hilton, Suzy, Hunter, Mattie, Peters, Robert, Wilcox, Craig

Official roll call

Timeline 45

DateChamberAction
August 1, 2025SenatePublic Act . . . . . . . . . 104-0110
August 1, 2025SenateEffective Date January 1, 2026
August 1, 2025SenateGovernor Approved
June 18, 2025SenateSent to the Governor
May 21, 2025HouseAdded Alternate Co-Sponsor Rep. Kelly M. Cassidy
May 21, 2025SenatePassed Both Houses
May 21, 2025HouseThird Reading - Short Debate - Passed 111-000-000
May 20, 2025HouseAdded Alternate Co-Sponsor Rep. Anne Stava
May 16, 2025HousePlaced on Calendar Order of 3rd Reading - Short Debate
May 16, 2025HouseSecond Reading - Short Debate
May 9, 2025HouseAdded Alternate Co-Sponsor Rep. Wayne A. Rosenthal
May 9, 2025HouseAdded Alternate Co-Sponsor Rep. Michael J. Coffey, Jr.
May 9, 2025HouseAdded Alternate Co-Sponsor Rep. Theresa Mah
May 9, 2025HouseAdded Alternate Co-Sponsor Rep. Will Guzzardi
May 8, 2025HouseAdded Alternate Co-Sponsor Rep. Martha Deuter
April 30, 2025HouseAdded Alternate Chief Co-Sponsor Rep. Bradley Fritts
April 30, 2025HouseAdded Alternate Chief Co-Sponsor Rep. Margaret Croke
April 30, 2025HouseAdded Alternate Chief Co-Sponsor Rep. Matt Hanson
April 30, 2025HouseAdded Alternate Chief Co-Sponsor Rep. Jaime M. Andrade, Jr.
April 30, 2025HousePlaced on Calendar 2nd Reading - Short Debate
April 30, 2025HouseDo Pass / Short Debate Transportation: Vehicles & Safety; 012-000-000
April 17, 2025HouseAssigned to Transportation: Vehicles & Safety
April 11, 2025HouseReferred to Rules Committee
April 11, 2025HouseFirst Reading
April 11, 2025HouseChief House Sponsor Rep. Ann M. Williams
April 11, 2025HouseArrived in House
April 11, 2025SenateThird Reading - Passed; 052-000-000
April 10, 2025SenatePlaced on Calendar Order of 3rd Reading April 11, 2025
April 10, 2025SenateSenate Floor Amendment No. 2 Adopted; Feigenholtz
April 10, 2025SenateSecond Reading
April 8, 2025SenateSenate Floor Amendment No. 2 Recommend Do Adopt Transportation; 019-000-000
April 8, 2025SenateSenate Floor Amendment No. 2 Assignments Refers to Transportation
April 3, 2025SenateSenate Floor Amendment No. 2 Referred to Assignments
April 3, 2025SenateSenate Floor Amendment No. 2 Filed with Secretary by Sen. Sara Feigenholtz
March 19, 2025SenatePlaced on Calendar Order of 2nd Reading March 20, 2025
March 19, 2025SenateDo Pass as Amended Transportation; 015-000-000
March 18, 2025SenateSenate Committee Amendment No. 1 Adopted
March 18, 2025SenateSenate Committee Amendment No. 1 Assignments Refers to Transportation
March 14, 2025SenateSenate Committee Amendment No. 1 Referred to Assignments
March 14, 2025SenateSenate Committee Amendment No. 1 Filed with Secretary by Sen. Sara Feigenholtz
March 5, 2025SenatePostponed - Transportation
February 11, 2025SenateAssigned to Transportation
February 4, 2025SenateReferred to Assignments
February 4, 2025SenateFirst Reading
February 4, 2025SenateFiled with Secretary by Sen. Sara Feigenholtz

Data: Open States (API v3; public data, attribution appreciated). Official record: ilga.gov. Bill pages link to the official text, not copied.

Sources for this page

Bill, action and roll-call data from Open States (public data, attribution appreciated). Neither Illinois Capitol Guide nor this information, as presented here, is endorsed by the Illinois General Assembly.