Benefit of the Month


December, 2011

Maintenance Decision Support System (MDSS) use shows benefit-cost ratios ranging from 1.33 to 8.67.(May 12, 2009)

November, 2011

After presence detection, adaptive signal control, and transit signal priority were implemented on the Atlanta Smart Corridor total fuel consumption decreased by 34 percent across all peak periods.(30 June 2010)

October, 2011

A radio-based, GPS emergency vehicle preemption system reduced the average response times by five to seven minutes on a busy corridor.(2010)

September, 2011

Integrated Vehicle-Based Safety System use results in 48 percent reduction in lane departure rate for light vehicles, with similar trend for heavy trucks.(June 2011)

August, 2011

Estimated reduction of 9.37 million personal vehicle miles traveled and 4,252 metric tons of CO2 from increased transit ridership in Reno, Nevada.(May 2010)

July, 2011

Use of Low Cost Driving Behavior Management System (DBMS) reduces recorded safety events by 38 to 52 percent.(June 2010)

June, 2011

In fiscal year 2008/2009, the Miami-Dade Traffic Incident Management (TIM) Team reduced the average roadway clearance time by 11 percent from the previous year.(2009)

May, 2011

Coordinated actuated traffic signal systems produced a 30 percent reduction in corridor travel times compared to actuated isolated systems, resulting in a benefit/cost ratio of 461.3.(September 2010)

March, 2011

Approximately 80 percent of the truck drivers surveyed indicated that collision warning systems made them more vigilant, helped them maintain a safer following distance, and increased their reaction time and awareness.(1/5/2007)

February, 2011

In Washington DC, an ITS work zone program implemented on I-295 decreased delay up to 90 percent with an average decrease in delay of 52 percent when drivers were advised to take alternate routes.(October 2008)

January, 2011

Changeable Message Signs in the Bay Area that displayed highway and transit trip times and departure times for the next train influenced 1.6 percent of motorists to switch to transit when the time savings was less than 15 minutes, and 7.9 percent of motorists to switch to transit when the time savings was greater than 20 minutes.(September 2009)

December, 2010

New Jersey Department of Transportation enhanced incident management efficiency by using I-95 Corridor Coalition’s Vehicle Probe Project data, experiencing an estimated savings of $100,000 per incident in user delay costs.(August 12, 2010)

November, 2010

Intelligent speed control applications that smooth traffic flow during congested conditions can reduce fuel consumption by 10 to 20 percent without drastically affecting overall travel times.(2009)

October, 2010

The use of vehicle probes allowed North Carolina and South Carolina to monitor traffic at a quarter of the cost of microwave or radar detectors.(August 12, 2010)

September, 2010

A personalized travel planning system helps commuters choose environmentally friendly routes and modes; reduces carbon dioxide emissions by 20 percent.(16-20 November 2008.)

August, 2010

In Puget Sound, variable tolling on SR-167 made more efficient use of carpool lanes without delaying buses; average speeds in general purpose lanes increased by 21 percent while average speeds in HOT lanes increased by 6 percent.(Winter 2009/2010)

July, 2010

In Florida, the addition of Open Road Tolling (ORT) to an existing Electronic Toll Collection (ETC) mainline toll plaza decreased delay by 50 percent for manual cash customers and by 55 percent for automatic coin machine customers, and increased speed by 57 percent in the express lanes.(21-25 January 2007)

June, 2010

Implementing Transit Signal Priority (TSP) can improve bus running times by 2 to 18 percent.(2007)

May, 2010

In Indiana during the 2008-2009 snow and ice season, the implementation of a Maintenance Decision Support System (MDSS) resulted in statewide savings of $9,978,536 (188,274 tons) in salt usage and $979,136 (41,967 hours) in overtime compensation from the previous winter season.(2009)

April, 2010

Through use of the Roll Stability Control (RSC) systems, it was estimated that between 1,422 and 2,037 combination vehicle rollover crashes in curves could be prevented, resulting in effectiveness rates of 37 percent and 53 percent, respectively.(February 2009)

March, 2010

In Oakland County, Michigan retiming 640 traffic signals during a two-phase project resulted in Carbon monoxide reductions of 1.7 and 2.5 percent, Nitrogen oxide reductions of 1.9 and 3.5 percent, and hydrocarbon reductions of 2.7 and 4.2 percent.(November/December 2004)

February, 2010

Integrated Corridor Management (ICM) strategies that promote integration among freeways, arterials, and transit systems can help balance traffic flow and enhance corridor performance; simulation models indicate benefit-to-cost ratios for combined strategies range from 7:1 to 25:1.(2009)

January, 2010

Evaluation data show that anti-icing and pre-wetting strategies can reduce sanding applications by 20 to 30 percent, decrease chemical applications by 10 percent, and reduce chloride and sediment runoff in local waterways.(19 August 2005.)

December, 2009

Signal retiming projects in several U.S. and Canadian cities reduced fuel consumption by 2 to 9 percent. (April 2004)

November, 2009

In Colorado, an automated commercial vehicle pre-screening system installed at three ports of entry check stations saved 48,200 gallons of fuel per month.(12/29/2004)

October, 2009

In Los Angeles, transit signal priority reduced total transit travel time by approximately 25 percent.(July 2001)

September, 2009

Signal retiming projects in several U.S. and Canadian cities decreased delay by 13 to 94 percent, and improved travel times by 7 to 25 percent.(April 2004)

August, 2009

In Myrtle Creek, Oregon, an advanced curve speed warning system installed on I-5 reduced the speed of 76 percent of drivers surveyed.(June 2006)

July, 2009

In Chattanooga, Tennessee, fixed-route scheduling software improved operations by saving approximately 60 hours per week in operator labor, resulting in a savings of approximately $62,000 per year.(10 June 2008)

June, 2009

Modeling data indicated that an automated work zone information system deployed on I-5 near Los Angeles contributed to a 4.3 percent increase in diversions and an 81 percent increase in average network speed.(9-13 January 2005)

May, 2009

In Georgia, the NaviGAtor incident management program reduced annual fuel consumption by 6.83 million gallons, and contributed to decreased emissions: 2,457 tons less Carbon monoxide, 186 tons less hydrocarbons, and 262 tons less Nitrous oxides.(August 2006)

April, 2009

An evaluation of scheduling software for the paratransit service in Billings, Montana found that the break-even point for savings as a result of the software implementation was a three percent improvement in efficiency.(May 2, 2007)

March, 2009

The Columbus Electronic Freight Management system reduced total transit time of an air-freight supply chain from 96 hours to 82 hours (14 percent) and saved $5.94 per shipment in labor costs across the entire supply chain by reducing paper work.(June 2008)

February, 2009

A survey of State and local transportation agencies found that AVL applications for highway maintenance can have benefit-to-cost ratios ranging from 2.6:1 to 24:1 or higher.(January 2004)

January, 2009

In North Carolina, Smart Work Zone systems increased alternate route usage by 10 to 15 percent when specific delay and alternate route information was posted on roadside dynamic message signs.(September 2004)

December, 2008

In Salt Lake City, Utah, staff meteorologists stationed at a TOC provided detailed weather forecast data to winter maintenance personnel, reducing costs for snow and ice control activities, and yielding a benefit-to-cost ratio of 10:1.(February 2007)

November, 2008

Outside San Francisco, a transit-based smart parking system contributed to an increase in transit mode share, a decrease in commute time and a reduction in total VMT.(December 2006)

October, 2008

In St. Paul, Minnesota, an advanced parking management system reduced travel times by nine percent.(January 2007)

September, 2008

In Florida, the addition of Open Road Tolling (ORT) to an existing Electronic Toll Collection (ETC) mainline toll plaza decreased crashes by an estimated 22 to 26 percent.(21-25 January 2007)

August, 2008

Evaluation data show that adaptive signal control strategies can improve travel times in comparison to optimized signal timing plans.(2 February 2005)

May, 2008

Trucks equipped with collision warning systems, adaptive cruise control, and advanced braking systems have the potential to reduce truck-initiated rear-end crashes by up to 28 percent.(1/5/2007)

April, 2008

Congestion charging in London resulted in pollutant emission reductions: 8 percent for oxides of nitrogen, 7 percent for airborne particulate matter, and 16 percent for carbon dioxide.(July 2007)

March, 2008

In Oregon, approximately 90 percent of motorists surveyed indicated that they would slow down in response to messages displayed by an automated high wind warning system.(February 2006)

February, 2008

In Denver, transit AVL decreased early and late arrivals by 12 and 21 percent, respectively.(August 2000)

January, 2008

Winter maintenance personnel indicated that anti-icing techniques limit snow/ice bonding on roadways, improve plow efficiency, reduce the time required to clear snow/ice from roadways, reduce maintenance costs (overtime pay and materials), and reduce the need for abrasive cleanup activities.(March 2001)

December, 2007

In Vantage, Washington an automated anti-icing system installed on I-90 had a benefit-to-cost ratio of 2.36:1, with benefits including fewer winter weather-related crashes and more efficient use of abrasives.(7-11 January 2001)

November, 2007

HAZMAT safety and security technologies can have tremendous societal cost savings well beyond the break even point for benefits and costs.(11 November 2004)

October, 2007

In Oakland County, Michigan a two-phase project to retime 640 traffic signals resulted in a benefit-cost ratio of 175:1 for the first phase and 55:1 for the second.(November/December 2004)

September, 2007

In Houston, a survey of motorists found that 85 percent of respondents changed their route after viewing real-time travel time information on freeway dynamic message signs.(May 2005)

August, 2007

An I-40 work zone in Arkansas equipped with an automated work zone information system had fewer fatal crashes compared to similar sites without the technology.(12-16 January 2003)

July, 2007

Congestion pricing in London decreases inner city traffic by about 20 percent and generates more than £97 million each year for transit improvements.(January 2006)