Making an Impact

In 2006, ACCS embarked on an extensive research and evaluation program to measure its success in meeting customers’ needs and document the travel and environmental impacts of mode changes influenced by TDM services. ACCS conducted surveys of residents, employees, service users, and employers to measure their awareness and use of TDM services, their satisfaction with the services, and their travel patterns before and after their contact with the program.

The research demonstrates the value of these cost-effective services to individual users and the collective value of the travel changes made by these users to achieve County-wide transportation and environmental objectives. These reports highlight ACCS’ significant accomplishments and impacts in FY 2008 and beyond, as measured by those surveys and other data collected.

RESEARCH METHOD

The impacts presented on the previous pages were calculated by applying a set of multiplier factors developed from surveys of customer groups to program activity data from ACCS’ tracking systems. These steps are:

1) Estimate commuter population “base”—This is the population of travelers who have used each program (e.g., Commuter Store customers, Bike Arlington participants, etc.)

2) Estimate “placements”—Multiply the population base by the “placement rate” (percentage of population who made a travel change as a result of the program)

3) Estimate vehicle trips reduced—Multiply number of placements by a vehicle trip reduction (VTR) factor equal to the average daily vehicle trips reduced per placement

4) Estimate vehicle miles traveled (VMT) reduced—Multiply number of vehicle trips reduced by average travel distance

5) Estimate emissions reduced—Multiply vehicle trips and VMT reduced by emissions factors for the Washington DC metropolitan area

6) Estimate energy (gasoline) savings—Divide VMT reduced by average passenger fleet miles per gallon of 23.8 (source MWCOG)

ACCS Making an Impact FY2013

By making it easier for people to switch from driving alone to taking transit, walking, biking, carpooling and vanpooling, Arlington County Commuter Services (ACCS) reduced traffic in Arlington by about 41,100 vehicle trips on the average workday in FY13, saving 30,200 gallons of gasoline and reducing CO2 emissions by 682,267 lbs. Here, we present highlights […]

ACCS Making an Impact FY2012

On the average workday in FY 2012, Arlington County Commuter Services (ACCS) reduced traffic in Arlington by about 44,000 trips by helping people switch from driving alone to taking transit, carpooling, vanpooling, walking, or biking. Eliminating these trips also eliminates over 757,400 miles of travel each business day, which means a savings of about 31,500 […]

ACCS Making an Impact FY2011

SUMMARY OF COMMUNITY BENEFITS On the average workday in FY 2011, Arlington County Commuter Services (ACCS) reduced traffic in Arlington by about 40,100 trips by helping people switch from driving alone to taking transit, carpooling, vanpooling, walking, or biking. Considering that the average lane of interstate highway carries approximately 4,000 – 6,000 vehicles in the […]

ACCS Making an Impact FY2010

SUMMARY OF COMMUNITY BENEFITS On the average workday in FY 2010, Arlington County Commuter Services (ACCS) reduced traffic in Arlington by 39,600 trips by helping people switch from driving alone to taking transit, carpooling, vanpooling, walking, or biking. Considering that the average lane of interstate highway carries approximately 4,000 – 6,000 vehicles in the rush […]

ACCS Making an Impact FY2009

RESEARCH The ACCS Making An Impact report for 2009 documents that each day ACCS eliminates nearly 39,000 vehicles trips, over 625,000,000 vehicles miles of travel, 26,000 gallons of fuel and 565,000 pounds of CO2. To visualize the daily impact on traffic of removing 39,000 vehicle trips  consider that I-395 and I-66 carry approximately 37,000 vehicles […]

ACCS Making an Impact FY2008

In FY 2008, Arlington County Commuter Services (ACCS) eliminated 38,000 daily vehicle trips in the County by helping people shift from driving alone to transit, carpooling, vanpooling, walking, bicycling, or teleworking. To visualize 38,000 vehicles, consider that I-395 and I-66 carry a combined total of 37,000 passenger vehicles in eight inbound lanes during the three hour morning rush period. This […]

2005 Arlington County Commuter Services (ACCS) Fiscal Year Annual Report

This report outlines ACCS’s FY2005 programs and accomplishments. Details are provided on programs designed to increase awareness and use of alternative forms of transportation in Arlington County through its various divisions:  Marketing, Sales, Distribution, Retail, Internet, and Transit Demand Management Planning/Administration. The Sales Division employs Arlington Transportation Partners (ATP), which is responsible for employer, residential, […]