VEH CD-ALTER SPEED LIMITS

Illinois General Assembly - Full Text of SB3374

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104TH GENERAL ASSEMBLY
State of Illinois
2025 and 2026
SB3374

Introduced 2/4/2026, by Sen. Mike Porfirio

SYNOPSIS AS INTRODUCED:

625 ILCS 5/11-208.8
625 ILCS 5/11-601

from Ch. 95 1/2, par. 11-601
625 ILCS 5/11-604

from Ch. 95 1/2, par. 11-604

Amends the Illinois Vehicle Code. With regard to automated speed
enforcement systems in safety zones, provides that "safety zone" does not
include any roadway in which the 30 mile per hour speed limit is decreased
by local ordinance without an engineering or traffic investigation.
Provides that a local authority or park district shall determine and
declare by ordinance a reasonable and safe absolute maximum speed which:
decreases the limit within an urban district which shall not require an
engineering or traffic investigation to a maximum speed limit of 25 miles
per hour, but not less than 20 miles per hour and a maximum speed limit of
10 miles per hour in an alley; increases the limit within an urban
district, but not to more than 55 miles per hour, if after increasing the
limit within an urban district an engineering or traffic investigation is
required to decrease the limit; or decreases the limit within a residence
district which shall not require an engineering or traffic investigation
to a maximum speed limit of 20 (rather than not to less than 25) miles per
hour. Requires a park district, city, village, incorporated town, or
county board to post a sign designating the new speed limit. Makes other
changes.
LRB104 19976 LNS 33427 b

A BILL FOR

SB3374
LRB104 19976 LNS 33427 b
1

AN ACT concerning transportation.

2

Be it enacted by the People of the State of Illinois,
3
represented in the General Assembly:

4

Section 5.
The Illinois Vehicle Code is amended by
5
changing Sections 11-208.8, 11-601, and 11-604 as follows:

6

(625 ILCS 5/11-208.8)
7

Sec. 11-208.8.
Automated speed enforcement systems in
8
safety zones.
9

(a) As used in this Section:
10

"Automated speed enforcement system" means a photographic
11
device, radar device, laser device, or other electrical or
12
mechanical device or devices installed or utilized in a safety
13
zone and designed to record the speed of a vehicle and obtain a
14
clear photograph or other recorded image of the vehicle and
15
the vehicle's registration plate or digital registration plate
16
while the driver is violating Article VI of Chapter 11 of this
17
Code or a similar provision of a local ordinance.
18

An automated speed enforcement system is a system, located
19
in a safety zone which is under the jurisdiction of a
20
municipality, that produces a recorded image of a motor
21
vehicle's violation of a provision of this Code or a local
22
ordinance and is designed to obtain a clear recorded image of
23
the vehicle and the vehicle's license plate. The recorded

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1
image must also display the time, date, and location of the
2
violation.
3

"Owner" means the person or entity to whom the vehicle is
4
registered.
5

"Recorded image" means images recorded by an automated
6
speed enforcement system on:
7

(1) 2 or more photographs;
8

(2) 2 or more microphotographs;
9

(3) 2 or more electronic images; or
10

(4) a video recording showing the motor vehicle and,
11

on at least one image or portion of the recording, clearly
12

identifying the registration plate or digital registration
13

plate number of the motor vehicle.
14

"Safety zone" means an area that is within one-eighth of a
15
mile from the nearest property line of any public or private
16
elementary or secondary school, or from the nearest property
17
line of any facility, area, or land owned by a school district
18
that is used for educational purposes approved by the Illinois
19
State Board of Education, not including school district
20
headquarters or administrative buildings. A safety zone also
21
includes an area that is within one-eighth of a mile from the
22
nearest property line of any facility, area, or land owned by a
23
park district used for recreational purposes. However, if any
24
portion of a roadway is within either one-eighth mile radius,
25
the safety zone also shall include the roadway extended to the
26
furthest portion of the next furthest intersection. The term

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1
"safety zone" does not include any portion of the roadway
2
known as Lake Shore Drive or any controlled access highway
3
with 8 or more lanes of traffic
or any roadway in which the 30
4
mile per hour maximum speed limit is decreased by local
5
ordinance without an engineering or traffic investigation in
6
accordance with subsection (b) of Section 11-604 after the
7
effective date of this amendatory Act of the 104th General
8
Assembly
.
9

(a-5) The automated speed enforcement system shall be
10
operational and violations shall be recorded only at the
11
following times:
12

(i) if the safety zone is based upon the property line
13

of any facility, area, or land owned by a school district,
14

only on school days and no earlier than 6 a.m. and no later
15

than 8:30 p.m. if the school day is during the period of
16

Monday through Thursday, or 9 p.m. if the school day is a
17

Friday; and
18

(ii) if the safety zone is based upon the property
19

line of any facility, area, or land owned by a park
20

district, no earlier than one hour prior to the time that
21

the facility, area, or land is open to the public or other
22

patrons, and no later than one hour after the facility,
23

area, or land is closed to the public or other patrons.
24

(b) A municipality that produces a recorded image of a
25
motor vehicle's violation of a provision of this Code or a
26
local ordinance must make the recorded images of a violation

SB3374
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1
accessible to the alleged violator by providing the alleged
2
violator with a website address, accessible through the
3
Internet.
4

(c) Notwithstanding any penalties for any other violations
5
of this Code, the owner of a motor vehicle used in a traffic
6
violation recorded by an automated speed enforcement system
7
shall be subject to the following penalties:
8

(1) if the recorded speed is no less than 6 miles per
9

hour and no more than 10 miles per hour over the legal
10

speed limit, a civil penalty not exceeding $50, plus an
11

additional penalty of not more than $50 for failure to pay
12

the original penalty in a timely manner; or
13

(2) if the recorded speed is more than 10 miles per
14

hour over the legal speed limit, a civil penalty not
15

exceeding $100, plus an additional penalty of not more
16

than $100 for failure to pay the original penalty in a
17

timely manner.
18

A penalty may not be imposed under this Section if the
19
driver of the motor vehicle received a Uniform Traffic
20
Citation from a police officer for a speeding violation
21
occurring within one-eighth of a mile and 15 minutes of the
22
violation that was recorded by the system. A violation for
23
which a civil penalty is imposed under this Section is not a
24
violation of a traffic regulation governing the movement of
25
vehicles and may not be recorded on the driving record of the
26
owner of the vehicle. A law enforcement officer is not

SB3374
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1
required to be present or to witness the violation. No penalty
2
may be imposed under this Section if the recorded speed of a
3
vehicle is 5 miles per hour or less over the legal speed limit.
4
The municipality may send, in the same manner that notices are
5
sent under this Section, a speed violation warning notice
6
where the violation involves a speed of 5 miles per hour or
7
less above the legal speed limit.
8

(d) The net proceeds that a municipality receives from
9
civil penalties imposed under an automated speed enforcement
10
system, after deducting all non-personnel and personnel costs
11
associated with the operation and maintenance of such system,
12
shall be expended or obligated by the municipality for the
13
following purposes:
14

(i) public safety initiatives to ensure safe passage
15

around schools, and to provide police protection and
16

surveillance around schools and parks, including but not
17

limited to: (1) personnel costs; and (2) non-personnel
18

costs such as construction and maintenance of public
19

safety infrastructure and equipment;
20

(ii) initiatives to improve pedestrian and traffic
21

safety;
22

(iii) construction and maintenance of infrastructure
23

within the municipality, including but not limited to
24

roads and bridges; and
25

(iv) after school programs.
26

(e) For each violation of a provision of this Code or a

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LRB104 19976 LNS 33427 b
1
local ordinance recorded by an automated speed enforcement
2
system, the municipality having jurisdiction shall issue a
3
written notice of the violation to the registered owner of the
4
vehicle as the alleged violator. The notice shall be delivered
5
to the registered owner of the vehicle, by mail, within 30 days
6
after the Secretary of State notifies the municipality of the
7
identity of the owner of the vehicle, but in no event later
8
than 90 days after the violation.
9

(f) The notice required under subsection (e) of this
10
Section shall include:
11

(1) the name and address of the registered owner of
12

the vehicle;
13

(2) the registration number of the motor vehicle
14

involved in the violation;
15

(3) the violation charged;
16

(4) the date, time, and location where the violation
17

occurred;
18

(5) a copy of the recorded image or images;
19

(6) the amount of the civil penalty imposed and the
20

date by which the civil penalty should be paid;
21

(7) a statement that recorded images are evidence of a
22

violation of a speed restriction;
23

(8) a warning that failure to pay the civil penalty or
24

to contest liability in a timely manner is an admission of
25

liability;
26

(9) a statement that the person may elect to proceed

SB3374
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1

by:
2

(A) paying the fine; or
3

(B) challenging the charge in court, by mail, or
4

by administrative hearing; and
5

(10) a website address, accessible through the
6

Internet, where the person may view the recorded images of
7

the violation.
8

(g) (Blank).
9

(h) Based on inspection of recorded images produced by an
10
automated speed enforcement system, a notice alleging that the
11
violation occurred shall be evidence of the facts contained in
12
the notice and admissible in any proceeding alleging a
13
violation under this Section.
14

(i) Recorded images made by an automated speed enforcement
15
system are confidential and shall be made available only to
16
the alleged violator and governmental and law enforcement
17
agencies for purposes of adjudicating a violation of this
18
Section, for statistical purposes, or for other governmental
19
purposes. Any recorded image evidencing a violation of this
20
Section, however, may be admissible in any proceeding
21
resulting from the issuance of the citation.
22

(j) The court or hearing officer may consider in defense
23
of a violation:
24

(1) that the motor vehicle or registration plates or
25

digital registration plates of the motor vehicle were
26

stolen before the violation occurred and not under the

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LRB104 19976 LNS 33427 b
1

control or in the possession of the owner or lessee at the
2

time of the violation;
3

(1.5) that the motor vehicle was hijacked before the
4

violation occurred and not under the control of or in the
5

possession of the owner or lessee at the time of the
6

violation;
7

(2) that the driver of the motor vehicle received a
8

Uniform Traffic Citation from a police officer for a
9

speeding violation occurring within one-eighth of a mile
10

and 15 minutes of the violation that was recorded by the
11

system; and
12

(3) any other evidence or issues provided by municipal
13

ordinance.
14

(k) To demonstrate that the motor vehicle was hijacked or
15
the motor vehicle or registration plates or digital
16
registration plates were stolen before the violation occurred
17
and were not under the control or possession of the owner or
18
lessee at the time of the violation, the owner or lessee must
19
submit proof that a report concerning the motor vehicle or
20
registration plates was filed with a law enforcement agency in
21
a timely manner.
22

(l) A roadway equipped with an automated speed enforcement
23
system shall be posted with a sign conforming to the national
24
Manual on Uniform Traffic Control Devices that is visible to
25
approaching traffic stating that vehicle speeds are being
26
photo-enforced and indicating the speed limit. The

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1
municipality shall install such additional signage as it
2
determines is necessary to give reasonable notice to drivers
3
as to where automated speed enforcement systems are installed.
4

(m) A roadway where a new automated speed enforcement
5
system is installed shall be posted with signs providing 30
6
days notice of the use of a new automated speed enforcement
7
system prior to the issuance of any citations through the
8
automated speed enforcement system.
9

(n) The compensation paid for an automated speed
10
enforcement system must be based on the value of the equipment
11
or the services provided and may not be based on the number of
12
traffic citations issued or the revenue generated by the
13
system.
14

(n-1) No member of the General Assembly and no officer or
15
employee of a municipality or county shall knowingly accept
16
employment or receive compensation or fees for services from a
17
vendor that provides automated speed enforcement system
18
equipment or services to municipalities or counties. No former
19
member of the General Assembly shall, within a period of 2
20
years immediately after the termination of service as a member
21
of the General Assembly, knowingly accept employment or
22
receive compensation or fees for services from a vendor that
23
provides automated speed enforcement system equipment or
24
services to municipalities or counties. No former officer or
25
employee of a municipality or county shall, within a period of
26
2 years immediately after the termination of municipal or

SB3374
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LRB104 19976 LNS 33427 b
1
county employment, knowingly accept employment or receive
2
compensation or fees for services from a vendor that provides
3
automated speed enforcement system equipment or services to
4
municipalities or counties.
5

(o) (Blank).
6

(p) No person who is the lessor of a motor vehicle pursuant
7
to a written lease agreement shall be liable for an automated
8
speed or traffic law enforcement system violation involving
9
such motor vehicle during the period of the lease; provided
10
that upon the request of the appropriate authority received
11
within 120 days after the violation occurred, the lessor
12
provides within 60 days after such receipt the name and
13
address of the lessee. The drivers license number of a lessee
14
may be subsequently individually requested by the appropriate
15
authority if needed for enforcement of this Section.
16

Upon the provision of information by the lessor pursuant
17
to this subsection, the municipality may issue the violation
18
to the lessee of the vehicle in the same manner as it would
19
issue a violation to a registered owner of a vehicle pursuant
20
to this Section, and the lessee may be held liable for the
21
violation.
22

(q) A municipality using an automated speed enforcement
23
system must provide notice to drivers by publishing the
24
locations of all safety zones where system equipment is
25
installed on the website of the municipality.
26

(r) A municipality operating an automated speed

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1
enforcement system shall conduct a statistical analysis to
2
assess the safety impact of the system following installation
3
of the system and every 2 years thereafter. A municipality
4
operating an automated speed enforcement system before the
5
effective date of this amendatory Act of the 103rd General
6
Assembly shall conduct a statistical analysis to assess the
7
safety impact of the system by no later than one year after the
8
effective date of this amendatory Act of the 103rd General
9
Assembly and every 2 years thereafter. Each statistical
10
analysis shall be based upon the best available crash,
11
traffic, and other data, and shall cover a period of time
12
before and after installation of the system sufficient to
13
provide a statistically valid comparison of safety impact.
14
Each statistical analysis shall be consistent with
15
professional judgment and acceptable industry practice. Each
16
statistical analysis also shall be consistent with the data
17
required for valid comparisons of before and after conditions
18
and shall be conducted within a reasonable period following
19
the installation of the automated traffic law enforcement
20
system. Each statistical analysis required by this subsection
21
shall be made available to the public and shall be published on
22
the website of the municipality.
23

(s) This Section applies only to municipalities with a
24
population of 1,000,000 or more inhabitants.
25

(t) If a county or municipality selects a new vendor for
26
its automated speed enforcement system and must, as a

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1
consequence, apply for a permit, approval, or other
2
authorization from the Department for reinstallation of one or
3
more malfunctioning components of that system and if, at the
4
time of the application for the permit, approval, or other
5
authorization, the new vendor operates an automated speed
6
enforcement system for any other county or municipality in the
7
State, then the Department shall approve or deny the county or
8
municipality's application for the permit, approval, or other
9
authorization within 90 days after its receipt.
10

(u) The Department may revoke any permit, approval, or
11
other authorization granted to a county or municipality for
12
the placement, installation, or operation of an automated
13
speed enforcement system if any official or employee who
14
serves that county or municipality is charged with bribery,
15
official misconduct, or a similar crime related to the
16
placement, installation, or operation of the automated speed
17
enforcement system in the county or municipality.
18

The Department shall adopt any rules necessary to
19
implement and administer this subsection. The rules adopted by
20
the Department shall describe the revocation process, shall
21
ensure that notice of the revocation is provided, and shall
22
provide an opportunity to appeal the revocation. Any county or
23
municipality that has a permit, approval, or other
24
authorization revoked under this subsection may not reapply
25
for such a permit, approval, or other authorization for a
26
period of 1 year after the revocation.

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1

(v) The University of Illinois Chicago Urban
2
Transportation Center shall conduct a study that includes the
3
following:
4

(1) a comprehensive review of the City of Chicago's
5

website multi-year crash data on North and South DuSable
6

Lake Shore Drive;
7

(2) the available research on potential effectiveness
8

of cameras powered by artificial intelligence in improving
9

compliance and reducing crashes and road fatalities on
10

North and South DuSable Lake Shore Drive;
11

(3) an analysis of driving behavior to detect risky
12

driving patterns and to address the DuSable Lake Shore
13

Drive crash corridors;
14

(4) an assessment of the effectiveness of
15

psychological deterrence in reducing habitual speeding;
16

and
17

(5) an assessment of how fatalities can be reduced
18

using these cameras powered by artificial intelligence and
19

other technical options that may be available in place of
20

cameras powered by artificial intelligence.
21

The Department shall adopt any rules necessary to
22
implement this subsection (v).
23
(Source: P.A. 103-364, eff. 7-28-23; 104-381, eff. 1-1-26
.)

24

(625 ILCS 5/11-601)

(from Ch. 95 1/2, par. 11-601)
25

Sec. 11-601.
General speed restrictions.

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1

(a) No vehicle may be driven upon any highway of this State
2
at a speed which is greater than is reasonable and proper with
3
regard to traffic conditions and the use of the highway, or
4
endangers the safety of any person or property. The fact that
5
the speed of a vehicle does not exceed the applicable maximum
6
speed limit does not relieve the driver from the duty to
7
decrease speed when approaching and crossing an intersection,
8
approaching and going around a curve, when approaching a hill
9
crest, when traveling upon any narrow or winding roadway, or
10
when special hazard exists with respect to pedestrians
,
11
bicyclists,
or other traffic or by reason of weather or
12
highway conditions. Speed must be decreased as may be
13
necessary to avoid colliding with any person or vehicle on or
14
entering the highway in compliance with legal requirements and
15
the duty of all persons to use due care.
16

(a-5) For purposes of this Section, "urban district" does
17
not include any interstate highway as defined by Section
18
1-133.1 of this Code which includes all highways under the
19
jurisdiction of the Illinois State Toll Highway Authority.
20

(b) No person may drive a vehicle upon any highway of this
21
State at a speed which is greater than the applicable
22
statutory maximum speed limit established by paragraphs (c),
23
(d), (e), (f) or (g) of this Section, by Section 11-605 or by a
24
regulation or ordinance made under this Chapter.
25

(c) Unless some other speed restriction is established
26
under this Chapter, the maximum speed limit in an urban

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LRB104 19976 LNS 33427 b
1
district for all vehicles is:
2

1. 30 miles per hour; and
3

2. 15 miles per hour in an alley.
4

(d) Unless some other speed restriction is established
5
under this Chapter, the maximum speed limit outside an urban
6
district for any vehicle is (1) 65 miles per hour for all or
7
part of highways that are designated by the Department, have
8
at least 4 lanes of traffic, and have a separation between the
9
roadways moving in opposite directions and (2) 55 miles per
10
hour for all other highways, roads, and streets.
11

(d-1) Unless some other speed restriction is established
12
under this Chapter, the maximum speed limit outside an urban
13
district for any vehicle is (1) 70 miles per hour on any
14
interstate highway as defined by Section 1-133.1 of this Code
15
which includes all highways under the jurisdiction of the
16
Illinois State Toll Highway Authority; (2) 65 miles per hour
17
for all or part of highways that are designated by the
18
Department, have at least 4 lanes of traffic, and have a
19
separation between the roadways moving in opposite directions;
20
and (3) 55 miles per hour for all other highways, roads, and
21
streets. The counties of Cook, DuPage, Kane, Lake, Madison,
22
McHenry, St. Clair, and Will may adopt ordinances setting a
23
maximum speed limit on highways, roads, and streets that is
24
lower than the limits established by this Section.
25

(e) In the counties of Cook, DuPage, Kane, Lake, McHenry,
26
and Will, unless some lesser speed restriction is established

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1
under this Chapter, the maximum speed limit outside an urban
2
district for a second division vehicle designed or used for
3
the carrying of a gross weight of 8,001 pounds or more
4
(including the weight of the vehicle and maximum load) is 60
5
miles per hour on any interstate highway as defined by Section
6
1-133.1 of this Code and 55 miles per hour on all other
7
highways, roads, and streets.
8

(e-1) (Blank).
9

(f) Unless some other speed restriction is established
10
under this Chapter, the maximum speed limit outside an urban
11
district for a bus is:
12

1. 65 miles per hour upon any highway which has at
13

least 4 lanes of traffic and of which the roadways for
14

traffic moving in opposite directions are separated by a
15

strip of ground which is not surfaced or suitable for
16

vehicular traffic, except that the maximum speed limit for
17

a bus on all highways, roads, or streets not under the
18

jurisdiction of the Department or the Illinois State Toll
19

Highway Authority is 55 miles per hour;
20

1.5. 70 miles per hour upon any interstate highway as
21

defined by Section 1-133.1 of this Code outside the
22

counties of Cook, DuPage, Kane, Lake, McHenry, and Will;
23

and
24

2. 55 miles per hour on any other highway.
25

(g) (Blank).
26
(Source: P.A. 98-511, eff. 1-1-14; 98-1126, eff. 1-1-15;

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1
98-1128, eff. 1-1-15; 99-78, eff. 7-20-15.)

2

(625 ILCS 5/11-604)

(from Ch. 95 1/2, par. 11-604)
3

Sec. 11-604.
Alteration of limits by local authorities.
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(a) Subject to the limitations set forth in this Section,
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the county board of a county may establish absolute maximum
6
speed limits on all county highways, township roads and
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district roads as defined in the Illinois Highway Code, except
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those under the jurisdiction of the Department or of the
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Illinois State Toll Highway Authority, as described in
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Sections 11-602 and 11-603 of this Chapter; and any park
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district, city, village, or incorporated town may establish
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absolute maximum speed limits on all streets which are within
13
its corporate limits and which are not under the jurisdiction
14
of the Department or of such Authority, and for which the
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county or a highway commissioner of such county does not have
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maintenance responsibility.
17

(b) Whenever any such park district, city, village, or
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incorporated town determines, upon the basis of an engineering
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or traffic investigation concerning a highway or street on
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which it is authorized by this Section to establish speed
21
limits, that a maximum speed limit prescribed in Section
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11-601 of this Chapter is greater or less than is reasonable or
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safe with respect to the conditions found to exist at any place
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or along any part or zone of such highway or street, the local
25
authority or park district shall determine and declare by

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ordinance a reasonable and safe absolute maximum speed limit
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at such place or along such part or zone, which:

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(1) Decreases the limit within an urban district
which
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shall not require an engineering or traffic investigation
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to a maximum speed limit of 25 miles per hour
, but not
to

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less than 20 miles per hour
and a maximum speed limit of 10
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miles per hour in an alley
; or

8

(2) Increases the limit within an urban district, but
9

not to more than 55 miles per hour
, if after increasing the
10

limit within an urban district an engineering or traffic
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investigation is required to decrease the limit as
12

described in Section 11-601 or in paragraph (1)
; or

13

(3) Decreases the limit outside of an urban district,
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but not to less than 35 miles per hour, except as otherwise
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provided in subparagraph 4 of this paragraph; or

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(4) Decreases the limit within a residence district
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which shall not require an engineering or traffic
18

investigation to a maximum speed limit of 20

, but not to
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less than 25
miles per hour, except as otherwise provided
20

in
paragraph (1)

subparagraph 1 of this paragraph
.
21

The park district, city, village, or incorporated town may
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make such limit applicable at all times or only during certain
23
specified times. Not more than 6 such alterations shall be
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made per mile along a highway or street; and the difference in
25
limit between adjacent altered speed zones shall not be more
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than 10 miles per hour.

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A limit so determined and declared by a park district,
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city, village, or incorporated town
shall be posted with signs
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designating the new speed limit and
becomes effective, and
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suspends the application of the limit prescribed in Section
5
11-601 of this Chapter, when appropriate signs giving notice
6
of the limit are erected at the proper place or along the
7
proper part or zone of the highway or street. Electronic
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speed-detecting devices shall not be used within 500 feet
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beyond any such sign in the direction of travel; if so used in
10
violation of this Section evidence obtained thereby shall be
11
inadmissible in any prosecution for speeding. However, nothing
12
in this Section prohibits the use of such electronic
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speed-detecting devices within 500 feet of a sign within a
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special school speed zone indicating such zone, conforming to
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the requirements of Section 11-605 of this Act, nor shall
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evidence obtained thereby be inadmissible in any prosecution
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for speeding provided the use of such device shall apply only
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to the enforcement of the speed limit in such special school
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speed zone.
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(c) A county engineer or superintendent of highways may
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submit to the Department for approval, a county policy for
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establishing altered speed zones on township and county
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highways based upon engineering and traffic investigations.
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(d) Whenever the county board of a county determines that
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a maximum speed limit is greater or less than is reasonable or
26
safe with respect to the conditions found to exist at any place

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or along any part or zone of the highway or road, the county
2
board shall determine and declare by ordinance a reasonable
3
and safe absolute maximum speed limit at that place or along
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that part or zone. However, the maximum speed limit shall not
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exceed 55 miles per hour. Upon receipt of an engineering study
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for the part or zone of highway in question from the county
7
engineer, and notwithstanding any other provision of law, the
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county board of a county may determine and declare by
9
ordinance a reduction in the maximum speed limit at any place
10
or along any part or zone of a county highway whenever the
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county board, in its sole discretion, determines that the
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reduction in the maximum speed limit is reasonable and safe.
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The county board
shall

may
post signs designating the new
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speed limit. The limit becomes effective, and suspends the
15
application of the limit prescribed in Section 11-601 of this
16
Chapter, when appropriate signs giving notice of the limit are
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erected at the proper place or along the proper part of the
18
zone of the highway. Electronic speed-detecting devices shall
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not be used within 500 feet beyond any such sign in the
20
direction of travel; if so used in violation of this Section,
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evidence obtained thereby shall be inadmissible in any
22
prosecution for speeding. However, nothing in this Section
23
prohibits the use of such electronic speed-detecting devices
24
within 500 feet of a sign within a special school speed zone
25
indicating such zone, conforming to the requirements of
26
Section 11-605 of this Act, nor shall evidence obtained

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thereby be inadmissible in any prosecution for speeding
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provided the use of such device shall apply only to the
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enforcement of the speed limit in such special school speed
4
zone.
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(Source: P.A. 95-574, eff. 6-1-08; 95-788, eff. 8-7-08.)

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