November 22, 2019
  • 2:34 pm Committee Leadership Comes into Focus for 116th Congress
  • 2:22 pm Interstate System Report Calls for More Funding, Tolling, VMT Fees, and Cybersecurity
  • 2:15 pm In Memoriam: President George H. W. Bush, ISTEA, and Transportation
  • 1:56 pm Growth Projected for Transportation Projects, but Costs a Challenge
  • 1:35 pm FAA Reshuffles Executives, Plans Drone Identification Rulemaking in Spring 2019
  • 1:28 pm Predictive Technology Helps Reduce Crashes on I-15 Corridor in Las Vegas
  • 1:14 pm Video Report: MoDOT Produces Multi-Lingual Safety Message
  • 1:11 pm PennDOT Nears Completion of Rapid Bridge Replacement Project
  • 1:08 pm Infrastructure Grants Awarded to “Smaller” South Dakota Communities
  • 12:42 pm State DOTs Reiterate Benefits of TIM Training at Safety Summit
  • 12:37 pm AASHTO Issues Second Coalition Rescission Repeal Letter
  • 12:36 pm Tariff Report Highlights Raw Material Cost Concerns
  • 12:23 pm USDOT Releases $900M in BUILD Grants
  • 12:19 pm House T&I Amtrak Hearing Airs State-Level Rail Concerns

The Pennsylvania Department of Transportation noted Sept. 27 that recent analysis of police-submitted crash reports from 2000 through 2017 shows found that vehicle crashes, injuries, and fatalities all declined at 11 “roundabout” intersections after they were installed.

The agency said in a statement that it reviewed 11 roundabouts on state routes at intersections that were previously controlled by stop signs or traffic lights and that had at least three years of data available before and after the roundabout’s installation.

The results of PennDOT’s study showed that:

  • Fatalities were reduced by 100 percent (from two to zero);
  • Serious injuries were reduced by 100 percent (from seven to zero);
  • Minor injuries were reduced by 95 percent (from 19 to one);
  • Possible/unknown severity injuries were reduced by 92 percent (from 49 to four);
  • Crashes causing only property damage decreased by 2 percent (from 49 to 48); and
  • The total number of crashes dropped 47 percent (from 101 to 54).

In addition to the 11 roundabouts meeting the review criteria, 32 other roundabouts have been installed on state routes and 26 more are in design, according to PennDOT Secretary Leslie Richards

“Our data shows that modern-day roundabouts reduce crash severity and injuries while improving traffic flow,” she said. “This underscores why roundabouts are becoming more commonplace in Pennsylvania and beyond.”

 

editor@aashto.org

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