Recent or noteworthy IIHS research is compiled here.
See our comprehensive bibliography for more on this or any other topic.

  • Public opinion, traffic performance, the environment, and safety after the construction of double-lane roundabouts

    Hu, Wen; McCartt, Anne T.; Jermakian, Jessica S.; Mandavilli, Srinivas
    Transportation Research Record 2402 Truck and Bus Safety; Roundabouts

  • Crash patterns and potential engineering countermeasures at Maryland roundabouts

    Mandavilli, Srinivas; Retting, Richard A.; McCartt, Anne T.
    Traffic Injury Prevention (TIP)
    February 2009

  • Long-term trends in public opinion following construction of roundabouts

    Retting, Richard A.; Kyrychenko, Sergey Y.; McCartt, Anne T.
    Transportation Research Record

  • Roundabouts, traffic flow and public opinion

    Retting, Richard A.; Mandavilli, Srinivas; Russell, Eugene R.; McCartt, Anne T.
    Traffic Engineering and Control
    July 2006

  • Continued reliance on traffic signals: the cost of missed opportunities to improve traffic flow and safety at urban intersections

    Bergh, Casey; Retting, Richard A.; Myers, Edward
    Insurance Institute for Highway Safety
    September 2005

  • Public opinion and traffic flow impacts of newly installed modern roundabouts in the United States

    Retting, Richard A.; Luttrell, Gregory; Russell, Eugene R.
    ITE Journal
    September 2002

  • Crash and injury reduction following installation of roundabouts in the United States

    Retting, Richard A.; Persaud, Bhagwant N.; Garder, Per E.; Lord, Dominique
    American Journal of Public Health
    April 2001

  • Safety effect of roundabout conversions in the United States: empirical Bayes observational before-after study

    Persaud, Bhagwant N.; Retting, Richard A.; Garder, Per E.; Lord, Dominique
    Transportation Research Record (TRR)