Skip to main content

Currently Skimming:


Pages 1-2

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 1...
... ACKNOWLEDGMENT This work was sponsored by the American Association of State Highway and Transportation Officials (AASHTO) , in cooperation with the Federal Highway Administration, and was conducted in the National Cooperative Highway Research Program (NCHRP)
From page 2...
... The National Academy of Sciences is a private, nonprofit, self-perpetuating society of distinguished scholars engaged in scientific and engineering research, dedicated to the furtherance of science and technology and to their use for the general welfare. Upon the authority of the charter granted to it by the Congress in 1863, the Academy has a mandate that requires it to advise the federal government on scientific and technical matters.

Key Terms



This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More information on Chapter Skim is available.