VMT

Travel time peaked in the 1990s, new research shows

By Chris McCahill Americans spent more than 10 hours per week traveling in the early 1990s—the highest amount in two decades—but that number has since dropped below 1975 levels to less than 8.5 hours, according to a new study published in Transportation Research Part A. The resulting travel

Estimating the amount people drive based on accessibility measures

By Logan Dredske How does the built environment influence the amount people drive? Research by SSTI’s Logan Dredske worked to answer this very question. The focus of his research was to create a framework for estimating vehicle miles traveled based on conditions of the built environment. His

To reach clean energy goals, Hawaii needs to address VMT

By Beth Osborne Ten years ago, the State of Hawaii set an ambitious goal to reduce their dependence on imported oil and create a clean energy future by 2045. The Elemental Excelerator commissioned Rhodium Group and Smart Growth America to analyze specifically what it will take for Hawaii to reach

Millennials are driving more, but only those making the least money

By Chris McCahill The new 2017 National Household Travel Survey gives us our first look at changing travel habits since the recession. From what we can tell, the average American drives less in 2017 than eight years earlier. Driving also seems to have increased considerably among

Does telecommuting increase vehicle miles traveled?

By Logan Dredske Recent research published in the Journal of Transport & Health analyzed the impact telecommuting has on vehicle miles traveled (VMT). The research, conducted by Sandip Chakrabarti, used the 2009 National Household Travel Survey to compare daily VMT for those who frequently

Household car travel dropping steadily

Update: Our original post noted a major decrease in household vehicle miles traveled from the 2009 National Household Travel Survey to the 2017 survey. Due to methodological changes from year-to-year, we’re looking deeper into the new data to validate any apparent trends in travel

What is ride-hailing doing to our transportation system?

By Robbie Webber A new study from the Institute of Transportation Studies at University of California–Davis delves into the effects of ride-hailing (Uber and Lyft) use on other parts of our transportation system. What they find confirms some assumptions and disproves others. Interrelationships

Bridging the gap between research and practice: new study on the role of induced vehicle travel

By Mary Ebeling A newly released study sponsored by CalTrans offers a thorough review and analysis of research and practice related to the limitations of existing travel forecasting models. The authors focus on limitations in forecasting induced vehicle travel generated by adding lane miles

VMT growth continued, slowed in 2016

By Chris McCahill The total number of vehicle miles traveled (VMT) in the U.S. grew by 2.8 percent to 3.2 trillion in 2016, according to monthly estimates from USDOT. This marks the third year of notable growth following nine years of historical lows, but still shows slower growth than in the

A preview of the driverless-vehicle future: Uber and other TNCs are cannibalizing New York’s transit ridership and worsening congestion and emissions

By Eric Sundquist The effect of transportation network companies (TNCs) like Uber and Lyft is one of the central concerns of transportation planning, in part because TNCs can provide a hint about what might happen when driverless vehicles become widely available. In addition, to date the lack of