Minnesota Transportation Research Collaboration Website

safety construction pavement signs economy sustainability car-share environment evaluation efficiency design bicycling lighting speed implementation impairment enforcement pavement management nox economics costs zoning restrictions naaqs npdes water quality concrete traffic greenhouse gas climate change overload overweight vehicles pavement damage commercial truck traffic vehicles bridges qualtiy assurance soil compaction moisture foundations geotechnical storm water air quality greenhouse effect technology porous asphalt rehabilitation mill and overlay soil tests speeding seed