IRIS (Intelligent Roadway Information System) is an

open-source Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use the source code, design documents, or content of the product. The open-source model is a decentralized sof ...

Advanced Traffic Management System The Advanced Traffic Management System (ATMS) field is a primary subfield within the Intelligent Transportation System (ITS) domain. The ATMS view is a top-down management perspective that integrates technology primarily to improve the flow of v ...

(ATMS) software project developed by the

Minnesota Department of Transportation The Minnesota Department of Transportation (MnDOT, ) oversees transportation by all modes including land, water, air, rail, walking and bicycling in the U.S. state of Minnesota. The cabinet-level agency is responsible for maintaining the state' ...

. It is used by transportation agencies to monitor and manage interstate and highway traffic. IRIS uses the

GPL The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses that guarantee end users the four freedoms to run, study, share, and modify the software. The license was the first copyleft for general u ...

license.

Functional areas

* Variable speed limit monitoring and control *

Active traffic management Active traffic management (also managed lanes, smart lanes, managed/smart motorways) is a method of increasing peak capacity and smoothing traffic flows on busy major highways. Techniques include variable speed limits, hard-shoulder running and ...

and lane control * Congestion Detection * Automated Warning System (AWS) *

Road Weather Information System A Road Weather Information System (RWIS) comprises automatic weather stations (AWS) (often technically referred to as Environmental Sensor Stations (ESS) as they also cover non-meteorological variables) in the field, a communication system for da ...

s (RWIS) /

Environmental Sensor Station A Road Weather Information System (RWIS) comprises automatic weather stations (AWS) (often technically referred to as Environmental Sensor Stations (ESS) as they also cover non-meteorological variables) in the field, a communication system for dat ...

s (ESS) *

Dynamic message sign A variable- (also changeable-, electronic-, or dynamic-) message sign, often abbreviated VMS, CMS, or DMS, and in the UK known as a matrix sign, is an electronic traffic sign often used on roadways to give travelers information about special ...

monitoring and control *

Ramp meter A ramp meter, ramp signal, or metering light is a device, usually a basic traffic light or a two-section signal light (red and green only, no yellow) together with a signal controller, that regulates the flow of traffic entering freeways accordi ...

monitoring and control *

Traffic camera A traffic camera is a video camera which observes vehicular traffic on a road. Typically, traffic cameras are put along major roads such as highways, freeways, expressways and arterial roads, and are connected by optical fibers buried alongside or ...

monitoring and control * Vehicle Detector Stations (VDS) for monitoring real-time vehicle speed, flow, density * Toll tags * Incident tracking, monitoring, and storage * Data export: real-time traffic, incidents, configuration, etc. * Integrated mapping

Supported hardware devices

{{Manual, section, date=March 2020 * DMS ** NTCIP Class A, B, C *** ADDCO Inc. *** Daktronics Inc. *** McCain Inc. *** SES America Inc., full matrix DMS, character matrix DMS *** Skyline: full sized DMS, VSL, scroll signs *** Wanco portable DMS ** DMS XML: a simple XML protocol for interfacing with external DMS systems *

** NTCIP 1204 device driver, validated with: *** Lufft Lcom *** Campbell Scientific CR1000 *** Vaisala dmc586 *** QTT LX-RPU Elite *** High Sierra Electronics ESS ** Optical Scientific ORG-815 Optical Rain Gauge ** SSI *

s ** PTZ: Manchester, Pelco D, Vicon, Infinova ** Switchers: Pelco, Vicon * VDS ** Canoga ** Wavetronix SmartSensor 105 ** Wavetronix SmartSensor 125 ** EIS RTMS (UDP) ** EIS G4 ** Caltrans URMS 2070: UDP, TCP, TCP Re-ID ** Sensys * Tag readers **

Bluetooth Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limi ...

: Iteris Velocity **

: Acyclica ** Transcore Encompass 6 Multiprotocol Reader

Minneapolis / Saint Paul IRIS System

The IRIS implementation in the

Minneapolis – Saint Paul Minneapolis () is the largest city in Minnesota, United States, and the county seat of Hennepin County. The city is abundant in water, with thirteen lakes, wetlands, the Mississippi River, creeks and waterfalls. Minneapolis has its origins ...

region consists of: * DMS: 135 * VDS: 5452 * RWIS: 4 * Cameras: 476 * Ramp meters: 433 * LCS: 194 (most can also be used as DMS) * Lane marking: 1 (in-road lighting) * Static sign with wig-wag beacons: 2

Gallery

File:IRIS example screenshot.jpg, Screenshot of Minnesota Department of Transportation IRIS Client. File:Iris data collection 1KHz reid loop data.jpg, Real-time 1 kHz loop data collected with IRIS.

Transportation agencies using IRIS

California Department of Transportation The California Department of Transportation (Caltrans) is an executive department of the U.S. state of California. The department is part of the cabinet-level California State Transportation Agency (CalSTA). Caltrans is headquartered in Sacrame ...

* Nebraska Department of Transportation *

Wyoming Department of Transportation The Wyoming Department of Transportation (WYDOT) is a government agency charged with overseeing transportation infrastructure for the U.S. state of Wyoming. WYDOT's stated mission is “to provide a safe, high quality, and efficient transportatio ...

Wisconsin Department of Transportation The Wisconsin Department of Transportation (WisDOT) is a governmental agency of the U.S. state of Wisconsin responsible for planning, building and maintaining the state's highways. It is also responsible for planning transportation in the state ...

External links