• January 29th, 2016

The Federal Highway Administration said vehicle miles traveled in November on all U.S. roads reached an estimated 253.2 billion VMT, up 4.3 percent from a year earlier and continuing a trend that should make 2015 the heaviest traffic volume year in U.S. history. For the first 11 months of 2015, the agency said, total U.S. […]

  • March 23rd, 2015

A public service announcement video by AASHTO, for the 2015 National Work Zone Awareness Week campaign, highlights the theme of “Expect the Unexpected”. This year’s annual observation is March 23-27, and as always is designed to heighten drivers’ awareness of the need to slow down and be especially observant in roadway work zones. There, a […]

  • July 9th, 2012

Since the 1950s transportation professionals have been able to quantitatively assess project alternatives based on mobility, and more recently in terms of environmental impact. Limited means have existed to assess the safety performance of different design alternatives. To help address that gap, the Highway Safety Manual (HSM) was published by the American Association of State Highway Transportation Officials (AASHTO), culminating ten years of research and development […]

  • February 9th, 2012

The Highway Safety Manual (HSM) was published by the American Association of State Highway and Transportation Officials (AASHTO) in the spring of 2010. Volume 2 (Part C) of the HSM includes safety predictive methods which can be used to quantitatively estimate the safety of a transportation facility. The resulting information can then be used to provide guidelines to […]