Tag: road design

Crashes increase when speed limits dip far below engineering recommendation

Speed limits set only five miles per hour below engineering recommendations produce a statistically significant decrease in total, fatal and injury crashes, and property-damage-only crashes, according to a group of Penn State researchers. However, if you lower the speed limit by 10, 15, 25 miles per hour, or more, drivers stop paying attention.

Report: City planners and road designers key to reducing traffic deaths

New research from WRI Ross Center for Sustainable Cities and the Global Road Safety Facility of the World Bank finds that the most effective way to prevent traffic deaths is a systemic approach that shifts responsibility away from the drivers and pedestrians using roads to the city planners and officials designing them.

Softree releases earthwork-reducing optimization software for road and corridor projects

Softree Technical Systems released its first standalone version of Softree Optimal. Softree Optimal is a patented vertical alignment optimization program that runs as an add-on for RoadEng, Civil 3D, or Bentley civil design products. It generates the lowest cost vertical alignment based on the ground surface, the horizontal alignment, and the design parameters and constraints entered by the user.

NTSB: Need to manage speed on U.S. streets

Cities across the U.S. lauded a report by the National Transportation Safety Board (NTSB) that concluded that excessive speed is one of the most significant causes of both crashes and fatalities on U.S. roadways.

Illinois Tollway seeks design firms for Move Illinois projects

The Illinois Tollway announced that it is seeking firms to provide design and construction management services for 16 new contracts.
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