Benefit

A well designed signal retiming plan covering 8.7 miles resulted in 16,322 hours of travel time savings and 982 tons of CO2 reductions.

Research on traffic signal performance in Indiana.


03/01/2014
US-31,Kokomo,Indiana,United States


Summary Information

In April 2012, a signal retiming project was performed on an 8.7-mile section of US-31 in Kokomo, Indiana. Researchers demonstrated how performance measures can be developed to assess and manage advanced signal systems over time.

Arterial travel time data were collected from crowd source probe vehicle applications one week before and one week after retiming was conducted to improve through-traffic on the corridor. An Indiana DOT counting station estimated average annual daily traffic (AADT) at 26,000 vehicles. The findings below summarize the benefits observed.

FINDINGS
Travel Time savings on US-31 in Kokomo, Indiana
RoadwayPlan
Median Travel Time
Savings (min)
Percentage of Daily
Traffic
Travel Time
Savings (hours)
Travel Time
Savings ($)
CO2
Reduction (tons)
CO2 Reduction
Savings($)
US-31 SB
Plan 0
(12-5 AM)
0.79
2.2%
1,987.30
$46,941.69
16.77
$368.96
Plan 1
(5-9 AM)
1.22
7.2%
9,925.90
$234,453.24
83.76
$1,842.82
Plan 2
(9-11 AM)
1.83
5.3%
10,878.00
$256,941.12
91.8
$2,019.58
Plan 3
(11-1 PM)
1.1
6.7%
8,246.30
$194,779.77
69.59
$1,530.98
Plan 4
(1-3 PM)
0.93
6.6%
6,886.10
$162,653.47
58.11
$1,278.47
Plan 5
(3-7 PM)
1.53
13.5%
23,311.00
$550,620.34
196.72
$4,327.91
Plan 6
(7-12 PM)
0.91
7.1%
7,319.90
$172,898.62
61.77
$1,359.00
US-31 NB
Plan 0
(12-5 AM)
0.58
2.2%
1,462.30
$34,540.02
12.34
$271.49
Plan 1
(5-9 AM)
0.75
7.6%
6,420.30
$151,649.25
54.18
$1,191.97
Plan 2
(9-11 AM)
1.02
5.5%
6,316.60
$149,199.92
53.31
$1,172.72
Plan 3
(11-1 PM)
1.1
7%
8,627.10
$203,775.18
72.8
$1,601.69
Plan 4
(1-3 PM)
1.26
7%
9,881.90
$233,415.21
83.39
$1,834.66
Plan 5
(3-7 PM)
0.69
14.2%
11,041.00
$260,787.26
93.17
$20,149.81
Plan 6
(7-12 PM)
0.45
7.9%
4,018.00
$94,906.91
33.91
$745.97
TOTAL
100%
116,322.00
$2,747,562.00
982
$21,596.03

Benefit Comments

No comments posted to date

Comment on this Benefit

To comment on this summary, fill in the information below and click on submit. An asterisk (*) indicates a required field. Your name and email address, if provided, will not be posted, but are to contact you, if needed to clarify your comments.



Source

Performance Measures for Traffic Signal Systems: An Outcome-Oriented Approach

Author: Day,Christopher M., et..al.

Published By: Purdue University

Source Date: 03/01/2014

URL: http://docs.lib.purdue.edu/jtrpaffdocs/3/

Rating

Average User Rating

5 (1 rating)

Rate this Benefit

(click stars to rate)


Typical Deployment Locations

Metropolitan Areas

Keywords

coordinated signals, signal coordination, centralized signal control, signal synchronization, traffic signals, advanced signal control, signal timing optimization, coordinated signal control, advanced signal controller, traffic signal retiming, retiming

Benefit ID: 2014-00926