definition - commuterlink commuterlink is an interagency transportation management system. what does...
TRANSCRIPT
Definition - CommuterLink
CommuterLink is an interagency transportation management system.
What does that mean? Put another way, it is the use of computer and communication technologies to:
Monitor the transportation system Manage the transportation system Provide information to the traveler
Mission
CommuterLink has two primary missions or purposes:
Mission
CommuterLink has two primary missions or purposes:
Efficiency- By improving the efficiency of the transportation system, it saves time, saves money, reduces air pollution, and reduces fuel consumption. It aligns with the UDOT Strategic Goal to “Make the System Work Better”
Mission
CommuterLink has two primary missions or purposes:
Efficiency- By improving the efficiency of the transportation system, it saves time, saves money, reduces air pollution, and reduces fuel consumption. It aligns with the UDOT Strategic Goal to “Make the System Work Better”
Safety- CommuterLink improves safety by helping to respond to and clear traffic incidents faster. It aligns with UDOT’s Strategic Goal to “Improve Safety”.
The Problem
Traffic congestion is growing faster than our
ability to add increased capacity to our highway
system.
100
110
120
130
140
150
160
170
180
190
1980 1985 1990 1995 2000
Year
Ind
ex
1980
=10
0
Vehicle-Miles
GDP
Population
Lane-Miles
Growth in Travel and US Economy
24% 31%40%
81%
2.4%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Population LicensedDrivers
RegisteredVehicles
VehicleMiles OfTravel
RoadMileage
% G
row
th 1
980-
2000
Growth In Transportation 1980-2000
Traffic Congestion Across the US
0
20
40
60
80
100
120
140
160
Salt Lake City Average of Top75
Washington Los Angeles
Ave
rag
e A
nn
ual
Per
Cap
ita
Ho
urs
of
Del
ay
Costs of Traffic Congestion
75 Largest Urban Areas in US
3.6 Billion Hours of Delay
5.7 Billion Extra Gallons of Fuel
$ 67 Billion Economic Cost
Poor Traffic Signal Timing
5%
Recurring40%
Incidents25%
Weather15%
Work Zones10%
Special Events5%
Causes of Traffic Congestion
Causes of Traffic Congestion
CommuterLink is able to improve on the 60% Incidents Weather Work Zone Special Events Poor Traffic Signal Timing
Services
CommuterLink fulfills its mission by providing the following services:
Traffic Signal Management Freeway Incident Management Freeway Traffic Management Traveler Information Interagency Real-Time Transportation
Information Exchange Transit
Services
Traffic Signal Management Traffic signal coordination Traffic signal real-time optimization Traffic signal maintenance management
Traffic Signal Control
Why Manage Traffic Signals?
Traffic signals determine the capacity of major streets
Stops and delays at signals reduce average speeds by 25 % to 50 %
25 % of all accidents are at intersections
Those Darn Red Lights !
Cause 2 Billion stops
Cause 20 Million hours of Delay
But remember - Your red light is someone else’s green light!
Traffic Signal Computer Control
1338 Traffic Signals
Services
Freeway Incident Management Incident Management Teams Traffic warning and diversion using VMS and HAR
Traffic Incident Management
Incident Management Operations
Number of Incident Responses by TOC
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
FY 01 FY 02 FY 03 FY 04
Services
Freeway Traffic Management Ramp metering Travel time and alternate route messages using VMS
and HAR Management of off-ramp traffic signals Electronic tolling (planned)
Why Manage Freeway Traffic ?
50 % of freeway congestion due to incidents
20 % of all accidents are the result of a previous accident
Why Manage Freeway Traffic ?
50 % of freeway congestion due to incidents
20 % of all accidents are the result of a previous accident
“Productivity” of freeway decreases during congestion
Ramp Meters
28 Ramp Meters
Variable Message Signs
107 Freeway Signs
Services
Traveler Information CommuterLink web site 511 Text pages Highway advisory radio (HAR) Real-time traffic data to private sector information
providers Live video to TV stations Live radio traffic reports
Traveler Information
Radio
Television
Traveler Information
CommuterLink Web Site
Variable Message Signs (VMS)
Controlled at TOC
Traveler InformationAnnual CommuterLink Website Visitor Sessions
0
200
400
600
800
1,000
1,200
1,400
FY 99 FY 00 FY 01 FY 02 FY 03 FY 04
Th
ou
sa
nd
s o
f S
es
sio
ns
Traveler InformationNumber of 511 Calls
0
100
200
300
400
500
600
FY 02 FY 03 FY 04
Th
ou
sa
nd
s o
f C
alls
Services
Interagency Real-Time Transportation Information Exchange Interagency traffic information distribution Video distribution to law enforcement dispatch centers Computer-aided dispatch data to transportation
agencies Road-Weather information
Services
Transit Light rail train traffic signal priority system Bus rapid transit traffic signal priority system Connection protection
Technology
CommuterLink provides these services using the following technology
Communications Computer systems and software Field Devices
Technology
Communications Fiber-optic communication system Leased communication services, such as DSL Wireless network communications
Technology
Computer systems and software Computer-controlled traffic signal and ramp meter
systems Freeway VMS and camera control software Traffic monitoring systems Web site
Utah Department of TransportationTraffic Operations Center
Utah Department of TransportationTraffic Operations Center
Technology
Field Devices 535 Closed-circuit television cameras (CCTV) 107 Variable message signs (VMS) 53 Road-weather information systems (RWIS) 260 Traffic monitoring stations (TMS) 19 Highway advisory radio (HAR) 28 Ramp Meters 1338 Traffic signals interconnected Traffic signal video detection 750 miles of Fiber Optic cable
Original Goals
Reduce freeway delays by 30% Reduce traffic signal stops by 20% Reduce intersection delays by 20% Increase peak-hour freeway speed by 15% Reduce freeway accidents by 20%
Actual Performance Reduce freeway delays by 30%
Actual: Freeway delays reduced 36% Reduce traffic signal stops by 20%
Actual: Reduced 15.2% Reduce intersection delays by 20%
Actual: Reduced 26.9% Increase peak-hour freeway speed by 15%
Actual: Increased 19.5% Reduce freeway accidents by 20%
Actual: Still being studied
More than $100 million in annual user-cost savings
