104TH GENERAL ASSEMBLY
State of Illinois
2025 and 2026
SB2112

 

Introduced 2/7/2025, by Sen. Mike Simmons

 

SYNOPSIS AS INTRODUCED:
 
625 ILCS 5/11-604  from Ch. 95 1/2, par. 11-604

    Amends the Illinois Vehicle Code. Allows a park district, city, village, or incorporated town to decrease the speed limit within an urban district, but not to less than 10 (rather than 20) miles per hour. Allows a park district, city, village, or incorporated town to decrease the speed limit within a residence district, not to less than 15 (rather than 25) miles per hour. Provides that the difference in limit between adjacent altered speed zones shall not be more than 15 (rather than 10) miles per hour.


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A BILL FOR

 

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1    AN ACT concerning transportation.
 
2    Be it enacted by the People of the State of Illinois,
3represented in the General Assembly:
 
4    Section 5. The Illinois Vehicle Code is amended by
5changing Section 11-604 as follows:
 
6    (625 ILCS 5/11-604)  (from Ch. 95 1/2, par. 11-604)
7    Sec. 11-604. Alteration of limits by local authorities.
8    (a) Subject to the limitations set forth in this Section,
9the county board of a county may establish absolute maximum
10speed limits on all county highways, township roads and
11district roads as defined in the Illinois Highway Code, except
12those under the jurisdiction of the Department or of the
13Illinois State Toll Highway Authority, as described in
14Sections 11-602 and 11-603 of this Chapter; and any park
15district, city, village, or incorporated town may establish
16absolute maximum speed limits on all streets which are within
17its corporate limits and which are not under the jurisdiction
18of the Department or of such Authority, and for which the
19county or a highway commissioner of such county does not have
20maintenance responsibility.
21    (b) Whenever any such park district, city, village, or
22incorporated town determines, upon the basis of an engineering
23or traffic investigation concerning a highway or street on

 

 

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1which it is authorized by this Section to establish speed
2limits, that a maximum speed limit prescribed in Section
311-601 of this Chapter is greater or less than is reasonable or
4safe with respect to the conditions found to exist at any place
5or along any part or zone of such highway or street, the local
6authority or park district shall determine and declare by
7ordinance a reasonable and safe absolute maximum speed limit
8at such place or along such part or zone, which:
9        (1) Decreases the limit within an urban district, but
10    not to less than 10 20 miles per hour; or
11        (2) Increases the limit within an urban district, but
12    not to more than 55 miles per hour; or
13        (3) Decreases the limit outside of an urban district,
14    but not to less than 35 miles per hour, except as otherwise
15    provided in subparagraph 4 of this paragraph; or
16        (4) Decreases the limit within a residence district,
17    but not to less than 15 25 miles per hour, except as
18    otherwise provided in subparagraph 1 of this paragraph.
19    The park district, city, village, or incorporated town may
20make such limit applicable at all times or only during certain
21specified times. Not more than 6 such alterations shall be
22made per mile along a highway or street; and the difference in
23limit between adjacent altered speed zones shall not be more
24than 15 10 miles per hour.
25    A limit so determined and declared by a park district,
26city, village, or incorporated town becomes effective, and

 

 

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1suspends the application of the limit prescribed in Section
211-601 of this Chapter, when appropriate signs giving notice
3of the limit are erected at the proper place or along the
4proper part or zone of the highway or street. Electronic
5speed-detecting devices shall not be used within 500 feet
6beyond any such sign in the direction of travel; if so used in
7violation of this Section evidence obtained thereby shall be
8inadmissible in any prosecution for speeding. However, nothing
9in this Section prohibits the use of such electronic
10speed-detecting devices within 500 feet of a sign within a
11special school speed zone indicating such zone, conforming to
12the requirements of Section 11-605 of this Act, nor shall
13evidence obtained thereby be inadmissible in any prosecution
14for speeding provided the use of such device shall apply only
15to the enforcement of the speed limit in such special school
16speed zone.
17    (c) A county engineer or superintendent of highways may
18submit to the Department for approval, a county policy for
19establishing altered speed zones on township and county
20highways based upon engineering and traffic investigations.
21    (d) Whenever the county board of a county determines that
22a maximum speed limit is greater or less than is reasonable or
23safe with respect to the conditions found to exist at any place
24or along any part or zone of the highway or road, the county
25board shall determine and declare by ordinance a reasonable
26and safe absolute maximum speed limit at that place or along

 

 

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1that part or zone. However, the maximum speed limit shall not
2exceed 55 miles per hour. Upon receipt of an engineering study
3for the part or zone of highway in question from the county
4engineer, and notwithstanding any other provision of law, the
5county board of a county may determine and declare by
6ordinance a reduction in the maximum speed limit at any place
7or along any part or zone of a county highway whenever the
8county board, in its sole discretion, determines that the
9reduction in the maximum speed limit is reasonable and safe.
10The county board may post signs designating the new speed
11limit. The limit becomes effective, and suspends the
12application of the limit prescribed in Section 11-601 of this
13Chapter, when appropriate signs giving notice of the limit are
14erected at the proper place or along the proper part of the
15zone of the highway. Electronic speed-detecting devices shall
16not be used within 500 feet beyond any such sign in the
17direction of travel; if so used in violation of this Section,
18evidence obtained thereby shall be inadmissible in any
19prosecution for speeding. However, nothing in this Section
20prohibits the use of such electronic speed-detecting devices
21within 500 feet of a sign within a special school speed zone
22indicating such zone, conforming to the requirements of
23Section 11-605 of this Act, nor shall evidence obtained
24thereby be inadmissible in any prosecution for speeding
25provided the use of such device shall apply only to the
26enforcement of the speed limit in such special school speed

 

 

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1zone.
2(Source: P.A. 95-574, eff. 6-1-08; 95-788, eff. 8-7-08.)