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Zone 12 Traffic Study
 
Speed Limit Map - Existing
Speed Limit Map - Recommendations
Intersection Traffic Control Map - Existing
Intersection Traffic Control Map - Recommendations
Intersection Traffic Control Map - Changes
Resident Brochure
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Wa-Pella Avenue Traffic Study
Summary

Zone 12 is an area bounded by Central Road to the north, Northwest Highway and Route 83 to the east, Lincoln Street to the south, and Busse Road to the west. The area has single and multi-family housing with commercial development in the downtown business district. Lincoln Junior High School, Westbrook School and St. Raymond School are within Zone 12.

The traffic study in Zone 12 has focused on implementing two programs: the Residential Speed Limit Program and Residential Intersection Traffic Control Program. The Residential Speed Limit Program involves reviewing the speed limit on each street. This program is being handled by the Engineering Staff. Speed data has been collected through the use of mechanical traffic counters and information has been gathered on each street in the neighborhood to assist in the study. Of the 10.6 miles of streets in Zone 12, 3.9 miles (37%) have a posted 20 mph speed limit, 3.8 miles (36%) have a posted 25 mph speed limit, and 2.9 miles (27%) have an unposted speed limit (30 mph per Illinois law). Based on the traffic study, it is recommended the entire 10.6 miles of streets in the neighborhood have a 25 mph speed limit.

 

Speed Limit

Existing Miles

Existing %

Recommended Miles

Recommended  %

20 mph

3.9

37

0.0

0

25 mph

3.8

36

10.6

100

30 mph

2.9

27

0.0

0

TOTAL

10.6

100

10.6

100

 

The Residential Intersection Traffic Control Program is being handled by the traffic engineering consulting company KLOA, Inc. of Rosemont, Illinois. They have gathered traffic volume data throughout the neighborhood and have taken measurements at each of the 64 intersections in Zone 12. Overall, their recommendations include an increase in the number of stop signs and elimination of the use of yield signs.
 

Intersection Traffic Control

Existing Intersections

Recommended Intersections

All-Way Stop Sign Control

9

8

Two-Way/One-Way Stop Sign Control

24

55

Yield Sign Control

7

0

No Intersection Traffic Control

24

1

TOTAL

64

64

 

Zone 12 Map  (Click on image to view full size)

 


Speed Limit Study & Recommendations

Studies have shown that most motorists will drive at a speed which is safe and reasonable. The modern practice of setting speed limits at this level actually results in the lowest accident experience. Interestingly enough, artificially lowering speed limits has little effect on the speed at which motorists will actually drive making traffic law violators out of even the most careful motorists. A speed limit set too low can lead to tailgating, improper passing and reckless driving while a speed limit set too high can foster unreasonable speeds for a neighborhood.

The Village is striving to see an increase in obedience to the speed limits resulting in safer streets. This means setting consistent and reasonable speed limits in a neighborhood. The objective, therefore, of the Residential Speed Limit Program is to evaluate and determine the appropriate speed limit of each residential street under the Village’s jurisdiction. Each street is to be studied based on accepted engineering practices, conformity with the IDOT Policy on Establishing and Posting Speed Limits and the criteria established in the Residential Speed Limit Program. To review the streets neighborhood by neighborhood, Staff has divided the Village into 18 “traffic zones”. This is the study of Zone 12.

Zone 12 is bounded by Central Road to the north, Northwest Highway and Route 83 to the east, Lincoln Street to the south, and Busse Road to the west. The neighborhood has approximately 10.6 miles of streets under the Village’s jurisdiction and contains Lincoln Junior High School, Westbrook School and St. Raymond School.

The goals of this study were to: (1) gather vehicle speed data along collector streets and representative residential streets, (2) gather operational characteristics for each street, (3) evaluate each street based on the established criteria, and (4) make a determination of the appropriate speed limit for each street within Zone 12. Operational characteristics include the number of access points (driveways & intersecting streets), location of sidewalk, parking restrictions, and accident history along a particular street under review. Based on the Engineering Staff’s detailed study, the recommendations are highlighted in the table below.


 

Speed Limit

Existing Miles

Existing %

Recommended Miles

Recommended %

20 mph

3.9

37

0.0

0

25 mph

3.8

36

10.6

100

30 mph

2.9

27

0.0

0

Staff also evaluated the three schools within the neighborhood, Lincoln Junior High School, Westbrook School and St. Raymond School, to determine those streets that should be posted a school speed limit zone. Along those streets there would be a 20 mph speed limit during school hours when pedestrians are present. The table below shows those streets within the neighborhood that are recommended to be posted a school speed limit zone. No neighborhood streets near Westbrook School are recommended to have a school speed limit zone since vehicle access to the school is off of Busse Road.
 

Lincoln Junior High School

Street

From

To

Can-dota Avenue

Milburn Avenue

Lincoln Street

Lincoln Street

We-go Trail

Can-dota Avenue

 

 

St. Raymond School

Street

From

To

Elmhurst Avenue

Milburn Avenue

Lincoln Street

I-oka Avenue

Milburn Avenue

Lincoln Street

Lincoln Street

I-oka Avenue

Elmhurst Avenue

Milburn Avenue

I-oka Avenue

Elmhurst Avenue

 

Intersection Traffic Control Study & Recommendations

The basic purpose of a stop or yield sign is to define who has the right-of-way at an intersection. They are not to be used to control speeding as studies have shown unwarranted signs lead to a high rate of disobedience and can actually cause higher speeds after the sign as motorists’ look to “make up for lost time.” Unwarranted signs can also instill a false sense of security for pedestrians, especially children, and can increase the potential for an accident.

The Village is striving to see an increase in obedience to our traffic control signs resulting in safer intersections. This means only stopping traffic before entering an intersection when it would otherwise be unsafe. The objective, therefore, of the Residential Intersection Traffic Control Program is to evaluate and determine the appropriate traffic control at each intersection under the Village’s jurisdiction. Each intersection is to be studied based on accepted engineering practices, conformity with the Manual on Uniform Traffic Control Devices and the criteria established in the Residential Intersection Traffic Control Program. To review the intersections neighborhood by neighborhood, Staff has divided the Village into 18 “traffic zones”. This is the study of Zone 12.

Zone 12 is bounded by Central Road to the north, Northwest Highway and Route 83 to the east, Lincoln Street to the south, and Busse Road to the west. The neighborhood has 64 intersections under the Village’s jurisdiction and contains Lincoln Junior High School, Westbrook School and St. Raymond School.

The goals of this study were to: (1) gather vehicle volume data along each of the streets in the neighborhood, (2) inspect and take measurements at each of the intersections, (3) review the accident history at each intersection, (4) evaluate each intersection based on the established criteria, and (4) make a determination of the appropriate traffic control for each intersection within Zone 12.

To assist in the evaluation process, a few guidelines have been established by the Village:

  • Intersections will be reviewed on both an individual basis and neighborhood wide basis
  • Only stop signs will be considered as a form of traffic control, not yield signs
  • Stop signs will only be installed on one of the two intersecting streets unless the data supports the need to control both streets

Based on the detail study performed by the Village’s consultant, KLOA Inc., the recommendations are highlighted in the table below.

 

Intersection Traffic Control

Existing Intersections

Recommended Intersections

All-Way Stop Sign Control

9

8

Two-Way/One-Way Stop Sign Control

24

55

Yield Sign Control

7

0

No Intersection Traffic Control

24

1

 

Traffic control at 25 intersections are recommended to have no change while modifications at 39 intersections are recommended as follows:
  • Four (4) intersections are recommended to be converted from all-way stop sign control to two-way/one-way stop sign control
  • Three (3) intersections are recommended to be converted from two-way/one-way stop sign control to all-way stop sign control
  • Two (2) intersections are recommended to change the road which will be under stop sign control at two-way/one-way stop sign control intersections
  • Seven (7) intersections are recommended to be converted from yield sign control to two-way/one-way stop sign control
  • Twenty-three (23) intersections with no traffic control are recommended to be converted to two-way/one-way stop sign control
     

Resident Brochure

 

Schedule

Tentative Study Schedule

September 27, 2006
Open House at Lincoln Junior High School

October 17, 2006
Recommendations formally presented at Village Board Meeting

May 2007
Restudy along Wa-Pella Avenue

June 2007
Results of restudy presented at Village Board Meeting

June-July 2007
Bid process to hire contractor to install/remove signs

August 2007
Install/remove signs as approved by the Village Board of Trustees

October 2007
Village performs post-study

May 2008
Village performs post-study

August 2008
Village performs post-study


Key People

Below is contact information for key people involved in this study:
 

KLOA, Inc.
Traffic engineering consultant


Michael Werthmann
9575 W. Higgins Road
Suite 400
Rosemont, IL 60018
847-518-9990
 
 
Village of Mount Prospect

Matt Lawrie
Traffic Engineer
1700 W. Central Road
Mount Prospect, IL 60056
847-870-5640
 
 

Contact Us

Contact us by e-mail or phone for more details on this study.

E-mail:
Phone: 847-870-5640
Fax: 847-253-9377
Website: www.mountprospect.org
After Hours Phone (Police Desk): 847-870-5656