Highway Research for the 21st Century

摘要

The U.S. highway system faces many challenges in the years ahead, challenges that cannot be successfully addressed without new knowledge and innovations of all sorts. For example, how can highway agencies and their contractors reconstruct heavily used urban freeways while maintaining service and minimizing traveler delays and community disruption? Can the application of "intelligent" information and communication technologies reduce motor vehicle crashes, squeeze additional capacity out of existing highways, and improve the reliability of motor vehicle travel? How do roadways affect the natural environment, and what can be done to mitigate their impact? Can we develop affordable materials that will significantly extend the lives of highway pavements and bridges?