Knowledge Resources

Highway Advisory Radio (HAR) can provide route diversion information during periods of congestion when phone and internet travel advisory systems are not available; benefit-to-cost ratios can range from 4:1 to 16:1 assuming a 5 to 20 percent compliance rate.(2017)

In a mountainous region of Spokane, Washington, about one-third of CVOs interviewed would consider changing routes based on the information provided on a road weather information website and highway advisory radio system; however, few could identify viable alternate routes. (8 January 2004)

During the 2002 Winter Olympic Games in Salt Lake City, Utah, a survey about the CommuterLink Web site showed that 98 percent of visitors and 97 percent of residents who used the Web site said it worked well for them(April 2003)

A simulation study of existing ITS (traveler information, ramp metering, and DMS) on a Detroit freeway demonstrated how these technologies can increase average vehicle speed, decreased average trip time, and reduce commuter delay by as much as 22 percent.(July 2001)

A simulation study of existing ITS (traveler information, ramp metering, and DMS) on a Detroit freeway demonstrated how these technologies were beneficial to corridor capacity.(July 2001)

A simulation study of the road network in Seattle, Washington demonstrated that providing information on arterials as well as freeways in a traveler information system reduced vehicle-hours of delay by 3.4 percent and reduced the total number of stops by 5.5 percent.(6-9 November 2000)

A simulation study of the road network in Seattle, Washington demonstrated that providing information on arterials as well as freeways in a traveler information system increased throughput by 0.1 percent.(6-9 November 2000)

In Arizona and Missouri a survey of tourists found that those who used advanced traveler information systems believed the information they received save them time.(30 June 2000)

A simulation study indicated that vehicle throughput would increase if arterial data were integrated with freeway data in an Advanced Traveler Information System in Seattle, Washington. (September 1999)

A simulation study indicated that integrating traveler information with traffic and incident management systems in Seattle, Washington could reduce emissions by 1 to 3 percent, lower fuel consumption by 0.8 percent, and improve fuel economy by 1.3 percent.(September 1999)

A simulation study indicated that integrating traveler information with traffic and incident management systems in Seattle, Washington could diminish delay by 1 to 7 percent, reduce stops by about 5 percent, lower travel time variability by 2.5 percent, and improve trip time reliability by 1.2 percent.(September 1999)

System costs for roadside traveler information systems were projected for upstate California; installation of changeable message signs (CMS) and mounting structures were estimated at $140K to $300K per site.(06/14/2019)

Average cost to install a highway advisory radio station ranged from $40,000 to $50,000 as reported by agencies that continue to use this technology.(2017)

Implementing Integrated Corridor Management (ICM) strategies on the I-15 Corridor in San Diego, California is estimated to cost $1.42 million annualized and a total 10-year life-cycle cost of $12 million.(September 2010)

In Washington state, the Mount St. Helens traveler information system was installed at a cost of $499,526.(June 2009)

In Wenatchee, Washington, the construction of a Transportation Management Center (TMC) and the installation of the associated ITS field equipment cost $460,000.(June 2009)

In Yakima, Washington, the deployment of a Traveler Information System cost $333,000.(June 2009)

The annualized life-cycle costs for full ITS deployment and operations in Tucson were estimated at $72.1 million. (May 2005)

A modeling study evaluated the potential deployment of full ITS capabilities in Cincinnati. The annualized life-cycle cost was estimated at $98.2 million.(May 2005)

The annualized life-cycle costs for full ITS deployment and operations in Seattle were estimated at $132.1 million.(May 2005)

Detailed costs of road weather information systems deployed at several sites north of Spokane, WA.(8 January 2004)

In Lake County, Illinois, TMC physical components cost $1.8 million.(September 2003)

Life cycle cost of four options for a communications network connecting ITS field devices to the Illinois DOT District 8 Traffic Operations Center range from $43 million to $52.5 million.(May 2003)

The highway advisory radio (HAR) system deployed at Blewett/Stevens pass in Washington State included a portable HAR unit ($30,000), and two fixed HAR stations ($15,000 each).(July 2001)

Highway Advisory Radio (HAR) - Capital cost/unit - $40000 - O&M cost/unit - $5000(06/14/2019)

Highway Advisory Radio Transmitter - Capital cost/unit - $85000(April 1, 2013)

Highway Advisory Radio Beacon - Capital cost/unit - $25000(April 1, 2013)

Highway advisory radio - Capital cost/unit - $12670(2/4/2013)

Highway advisory radio - Capital cost/unit - $12670(2/4/2013)

Highway advisory radio - Capital cost/unit - $12670(2/4/2013)

HAR Transmitter - Capital cost/unit - $31000(01/01/2012)

HAR Flashing Signs - Capital cost/unit - $31000(01/01/2012)

HAR Transmitter - Capital cost/unit - $31000(01/01/2012)

HAR Flashing Signs - Capital cost/unit - $31000(01/01/2012)

Highway advisory radio transmitters - Capital cost/unit - $50000(November 19, 2010)

Highway Advisory Radio - Capital cost/unit - $12670(2007)

Highway Advisory Radio - Capital cost/unit - $18.25(January 2008)

Highway Advisory Radio - Portable - Capital cost/unit - $18.25(January 2008)

Highway Advisory Radio - Capital cost/unit - $57500 - O&M cost/unit - $1200 - Lifetime - 10 years(6/29/2007)

Highway Advisory Radio Sign - Capital cost/unit - $6000 - O&M cost/unit - $1250 - Lifetime - 7 years(6/29/2007)

Highway Advisory Radio - Capital cost/unit - $24000 - Lifetime - 20 years(3/18/2006)

Highway Advisory Radio - Capital cost/unit - $46000 - O&M cost/unit - $2449(5 August 2004)

Highway Advisory Radio - Capital cost/unit - $46000 - O&M cost/unit - $2449(5 August 2004)

Highway Advisory Radio Sign and Beacon - Capital cost/unit - $46000 - O&M cost/unit - $2449(5 August 2004)

Highway Advisory Radio Sign and Beacon - Capital cost/unit - $46000 - O&M cost/unit - $2449(5 August 2004)

Highway Advisory Radio - Capital cost/unit - $46000 - O&M cost/unit - $2449(5 August 2004)

Highway Advisory Radio (HAR) - Capital cost/unit - $40000(September 2003)

Highway Advisory Radio (HAR) Signs - Capital cost/unit - $40000(September 2003)

Highway Advisory Radio Sign - Capital cost/unit - $1000(06/30/2003)

Highway Advisory Radio - Capital cost/unit - $78000 - O&M cost/unit - $3000 - Lifetime - 10 years(06/30/2003)

Highway Advisory Radio - Capital cost/unit - $82000 - O&M cost/unit - $3280 - Lifetime - 10 years(8/31/2001)

Highway Advisory Radio - Capital cost/unit - $51606 - O&M cost/unit - $5000 - Lifetime - 10 years(6/29/2001)

Highway Advisory Radio - Capital cost/unit - $25000 - O&M cost/unit - $150 - Lifetime - 10 years(6/12/2001)

Highway Advisory Radio Sign - Capital cost/unit - $5000 - O&M cost/unit - $250 - Lifetime - 10 years(6/12/2001)

Highway Advisory Radio - Capital cost/unit - $26000 - O&M cost/unit - $700 - Lifetime - 20 years(5/29/2001)

Highway Advisory Radio - Capital cost/unit - $30000 - O&M cost/unit - $700 - Lifetime - 20 years(5/29/2001)

Adopt best practices for integrating emergency information into Transportation Management Center (TMC) operations to improve performance and increase public mobility, safety and security.(2/28/2006)

Invest in research and development for emergency integration.(2/28/2006)

Extend the application of emergency integration best practices to further improve emergency operations.(2/28/2006)

Integrate weather information into Transportation Management Center (TMC) operations to enhance the ability of operators to manage traffic in a more responsive and effective way during weather events.(2/28/2006)

Treat maintenance staff as customers and beneficiaries of ATIS information.(5/1/2005)

Treat system operators as the client and consider their perspectives during ATIS project development.(5/1/2005)

Consider how implementing an ATIS system will impact staffing and training requirements.(5/1/2005)

Consider that ATIS deployment in rural and/or remote areas presents special challenges.(5/1/2005)

Provide drivers with sufficient managed lane information that can be easily disseminated and understood. (2005)

Use ITS to implement a reliable communications system in work zones.(1/1/2004)

Ensure initial and ongoing success of ITS deployments by providing sufficient start-up time, maintaining flexibility, and performing maintenance needs in-house.(1/1/2004)

Effectively communicate plans for implementing contraflow lanes during a hurricane evacuation.(11/1/2003)

Consider potential system enhancements to meet heavy demand.(4/1/2003)

Provide consistent and high-quality information to influence traveler behavior.(6/1/1998)