Eco-cruise control (ECC) systems that use topography information to maximize engine performance can reduce fuel consumption 5 to 15 percent.(02/19/2013)
Installation of adaptive signal control systems in two corridors in Colorado reduced fuel consumption by 2 to 7 percent and pollution emissions by up to 17 percent. (July 2012)
A decentralized adaptive signal control system could reduce fuel consumption by 4.3 million gallons and total emissions by 39K tonnes annually, if deployed city-wide in Pittsburgh.(July 2012)
An optimized traffic signal timing project in Allegheny County, PA resulted in a benefit-cost ratio of 57:1 along the corridor.(August 2011)
Synchronizing traffic lights on Alicia Parkway, a major corridor in California, reduced the number of stops by 75 percent and lowered greenhouse gas emissions by 7 percent.(May 25, 2011)
Tire pressure monitoring and maintenance systems improved motor carrier fuel economy by 1.4 to 1.8 percent.(02/24/2011)
Cordon pricing contributed to a 14 percent reduction in climate gases in Stockholm and a 14 percent reduction in airborne particulate matter in Milan.(2011)
Navigation systems with eco-routing features can improve fuel economy by 15 percent.(January 2011)
In Germany, vehicle-miles traveled using cleaner trucks (Euro 4 and 5) rose 60 percent from 2 percent in 2005 to over 62 percent in 2009 because of the nationwide heavy-goods-vehicle tolling program.(12/01/2010)
The Stockholm congestion tax project reduced traffic congestion by 20 percent and vehicle emissions by 10 to 14 percent in the Central Business District.(12/01/2010)
Simulated deployment of Integrated Corridor Management (ICM) technologies on the I-394 corridor in Minneapolis show a benefit-cost ratio of 22:1 over ten years.(November 2010)
Integrated Corridor Management (ICM) on the I-15 Corridor in San Diego yielded an estimated benefit-to-cost ratio of 9.7:1.(September 2010)
Implementing Integrated Corridor Management (ICM) strategies on the U.S. 75 corridor in Dallas, Texas produced an estimated benefit-to-cost ratio of 20.4:1.(September 2010)
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)
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)
Adaptive signal control at 12 intersections improved average travel time up to 39 percent on Route MO-291.(March 2010)
The St. Louis Motorist Assist program had a benefit-cost ratio of 38.25:1, with annual secondary crashes lowered by 1,082 and annual congestion costs lowered by $1,130,000.(February 2010)
A modeling study found that alerting drivers to the status of upcoming traffic signals led to smoother decelerations to the intersection, and thereby reduced fuel consumption and lowered emissions by up to 40 percent for passenger vehicles.(10-14 January 2010)
Local traffic measures such as controlling traffic demand, banning heavy duty vehicles or restricting speeds activated only during periods of peak pollution can contibute to significant reductions in air quality measures.(10-14 January 2010)
Simulation models show that real-time on-board driver assistance systems that recommend proper following distances can improve fuel economy by approximately 10 percent.(21-25 September 2009)
Improvements in commercial vehicle travel times, fuel savings and emission reductions are five times greater when using an Automated License Plate Recognition system to determine inspection pull overs in conjunction with an electronic credentialling system.(21-25 September 2009)
CO2 emissions can be reduced up to 15 percent using in-vehicle performance monitoring systems for Eco-Driver Coaching.(September 16, 2009)
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)
A traveler information system for informing visitors to the Grand Canyon National Park of the availability of a shuttle for car-free travel to the Canyon View Information Plaza added 368 shuttle riders per day, an increase of transit mode share by 45.7 percent.(March 2009)
A personalized travel planning system helps commuters choose environmentally friendly routes and modes; reduces carbon dioxide emissions by 20 percent.(16-20 November 2008.)
Mandatory dynamic automatic controlling ISA (Intelligent Speed Assistance) could reduce fuel consumption and harmful emissions by 4 to 11 percent.(November 2008)
Use of Navigation systems combined with traveler information can reduce Vehicle Miles Traveled by 16 percent, and drivers can save up to 30 percent in mileage when searching for a parking space.(November 2008)
The Oregon DOT estimated that weigh-in-motion and electronic screening systems at 21 weigh stations can reduce emissions of harmful particulate matter by 0.5 tons per year.
In 2007, the Transport for London (TfL) stated that between 2003 and 2006, NOX emissions fell by 17 percent, PM10 by 24 percent and CO2 by 3 percent, with some of this improvement being attributed to the effects of better traffic flow, and the rest of the improvements, a result of improved vehicle technology.(August 2008)
In Stockholm the permanent charging program (Cordon Charging) produced improvements in the environment by reducing carbon dioxide by 10 to 14 percent, NOX by 7 percent, and particulates by 9 percent.(August 2008)
Case studies of several transportation departments updating traffic signal systems estimated at least 10 percent reduction in delays, 23 percent reduction in the number of stops, and 3.5 percent reduction in fuel consumption as a result of signal system upgrades and retimings. (December 31, 2007)
Electronic credentialing allowed trucks to be placed into service an average of 3.5 days sooner than paper-based systems.(2 October 2007)
Electronic screening produced operating cost savings per bypass of $8.68 for interstate motor carriers.(2 October 2007)
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)
The safety service patrol (SSP) in Hampton Roads, Virginia produced an annual benefit of $11 million in fuel savings and reductions in motorist delay.(2007)
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)
In Monroe County, New York, the Camera Deployment and Intelligent Transportation Systems (ITS) Integration project reduced incident validation times by 50 to 80 percent saving between 5 and 12 minutes per incident.(August 2006)
Congestion mitigating benefits of cordon charging in London enabled taxi drivers to cover more miles per hour, service more riders, and decrease operating costs per passenger-mile.(January 2006)
In Florida, the Road Ranger Service Patrol program saved over 1.7 million gallons of fuel by eliminating over one million vehicle-hours of delay in 2004.(November 2005)
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.)
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)
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)
In Chicago, a feasibility study indicated that automated truck-way technologies (automatic truck steering, speed, and platoon spacing control) would save travel time and reduce fuel consumption.(August 2004)
Signal retiming projects in several U.S. and Canadian cities reduced fuel consumption by 2 to 9 percent.
(April 2004)
In 2002, the Maryland CHART highway incident management program reduced delay by about 30 million vehicle hours and saved about 5 million gallons of fuel.(November 2003)
Freight Information Real-Time System for Transport (FIRST): Evaluation Final Report(5 October 2003)
By implementing coordinated signal timing on the arterial network in Syracuse, New York total fuel consumption was reduced by 9 to 13 percent, average fuel consumption declined by 7 to 14 percent, average vehicle emissions decreased by 9 to 13 percent.(September 2003)
A study of the Coordinated Highways Action Response Team in Maryland found that the system reduced incident duration and saved approximately 4.1 million gallons of fuel in 2000.(14-17 October 2002)
Simulation of a transit signal priority system in Helsinki, Finland indicated that fuel consumption decreased by 3.6 percent, Nitrogen oxides were reduced by 4.9 percent, Carbon monoxide decreased by 1.8 percent, hydrocarbons declined by 1.2 percent, and particulate matter decreased by 1.0 percent.(13-17 January 2002.)
A simulation study in Minneapolis-St. Paul estimated that ramp metering saved 2 to 55 percent of the fuel expended at each ramp.( 13-17 January 2002)
During the A.M. peak period, transit signal priority on an arterial route in Arlington, Virginia could increase carbon monoxide emissions by 5.6 percent and decrease nitrogen emissions by 1.7 percent.(13-17 January 2002)
An evaluation of electronic toll collection systems at three major toll plazas outside Baltimore, Maryland indicated these systems reduced environmentally harmful emissions by 16 to 63 percent. (January 2002)
The E-ZPass electronic toll collection system on the New Jersey Turnpike reduced delay for all vehicles by 85 percent saving an estimated 1.2 million gallons of fuel each year and eliminating approximately 0.35 tons of VOC and 0.056 tons NOx per weekday.(August 2001)
Modeling found emissions reductions of 3.7 to 4.6 percent due to an advanced transportation management and traveler information system serving northern Kentucky and Cincinnati.(4-7 June 2001)
Winter maintenance personnel indicated that road weather information systems decrease salt usage, and anti-icing techniques limit damage to roadside vegetation, groundwater, and air quality (where abrasives are applied).
(March 2001)
Net annual vehicle emissions increased by 1,160 tons and fuel consumption decreased by 5.5 million gallons when the ramp metering system on Minneapolis-St. Paul freeways was shut down.(February 2001)
Evaluation of the Environmental Effects of Intelligent Cruise Control (ICC) Vehicles(7-11 January 2001)
Optimized signal timing plans, coordinated traffic signal control, and adaptive signal control reduced fuel use by 7.8 percent in California.(7-11 January 2001)
Fuel Consumption Reduction Experienced by Two PROMOTE-CHAUFFEUR Trucks in Electronic Towbar Operation(6-9 November 2000)
Simulation results indicated that vehicle emissions could be reduced by two percent if arterial traffic flow data were included in the traveler information system in Seattle, Washington.(30 May 2000)
In 1997, the Maryland CHART highway incident management program reduced delay by approximately 15.6 million vehicle hours and saved about 5.85 million gallons of fuel.(May 2000)
Evaluation of freeway DMS integrated with incident management in San Antonio, Texas, found fuel consumption reduced by 1.2 percent; integrating the DMS with arterial traffic control systems could save 1.4 percent. (May 2000)
In Arizona, traffic signal coordination among two jurisdictions contributed to a 1.6 percent reduction in fuel consumption and a 1.2 increase in carbon monoxide emissions. (April 2000)
In Tysons Corner, Virginia optimized signal timing lead to a 9 percent reduction in fuel consumption.(March 2000)
In Ames, Iowa, an automated horn warning system that alerted motorists and pedestrians of oncoming trains reduced the area impacted by noise levels greater than 80 dBA from 171 acres to less than 6 acres.(2000)
In Torino, Italy, a simulation study found that an automated speed control system designed to optimize travel speeds between green lights can reduce fuel consumption by 8.3 to 13.8 percent, reduce CO2 emissions by 3.9 to 5.4 percent; reduce hydrocarbon emissions by 4.2 to 6.9 percent, and reduce NOx emissions by 7.9 to 11.3 percent.(8-12 November 1999)
An adaptive signal control system in Toronto, Canada reduced vehicle emissions by 3 to 6 percent and lowered fuel consumption by 4 to 7 percent.(8-12 November 1999)
In Michigan, an analysis of adaptive cruise control indicated that the technology reduced fuel consumption and emissions by limiting throttle fluctuations.(October 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)
In-vehicle computer visioning technology designed to detect and warn truck drivers of lane departure and driver drowsiness reduced fuel consumption by 15 percent, increased safety, and provided drivers with more comfortable working conditions.(20 July 1999)
In California, electronic toll collection on the Carquinez Bridge decreased annual emissions of Carbon monoxide, Nitrogen oxides, and hydrocarbons.(March 1999)
A transit signal priority system in Eastleigh, England reduced bus fuel consumption by 19 percent and reduced bus emissions by 15 to 30 percent, and increased fuel consumption for other vehicles by 5 percent and increased the emissions of other vehicles up to 11 percent.(1999)
A transit signal priority system in Southampton, England reduced bus fuel consumption by 13 percent, lowered bus emissions by 13 to 25 percent, increased fuel consumption for other vehicles by 6 percent, and increased the emissions of other vehicles up to 9 percent.(1999)
Impacts of Electronic Toll Collection on Vehicle Emissions(11-15 January 1998)
In Scandinavia, vehicles equipped with a GPS-based tracking system and on-board monitoring systems were able to reduce wasted mileage and emissions in southern and central Sweden, and increase freight movement by 15 percent.(May/June 1997)
Evaluation Report for ITS for Voluntary Emission Reduction: An ITS Operational Test for Real-Time Vehicle Emissions Detection(May 1997)
In San Antonio, Texas, a freeway management system reduced fuel consumption by an estimated 2,600 gallons per major incident.(12-16 January 1997)
An advanced signal system in Richmond, Virginia reduced fuel consumption by 10 to 12 percent and decreased vehicle emissions by 5 to 22 percent.(June 1996)
Innovations in Transportation and Air Quality: Twelve Exemplary Projects(1996)
Fuel consumption fell by 5.7 percent, hydrocarbons declined by 3.7 percent, and carbon monoxide emissions were reduced by 5.0 percent when an adaptive signal control system was implemented in Toronto, Canada.(Spring 1995)
Fuel consumption fell by 13 percent and vehicle emissions were reduced by 14 percent due to a computerized signal control system in Los Angeles, California.(June 1994)
A model indicated that changes in travel behavior due to better traveler information in Boston, Massachusetts would result in a 25 percent reduction in volatile organic compounds, a 1.5 percent decline in nitrous oxide, and a 33 percent decrease in carbon monoxide.(July 1993)
Incident Management Using Total Stations(August 1992)
