The National Cooperative Highway Research Program (NCHRP) was created in 1962 as a means to conduct research in acute problem areas that affect highway planning, design, construction, operation, and maintenance nationwide. The state departments of transportation are the sole sponsors of the NCHRP. Support is voluntary and funds are drawn from each state’s Federal-Aid Highway apportionment of State Planning and Research (SPR) funds, in an amount equal to 5½ percent of the total SPR apportionment.

For a complete description of NCHRP program development, and listings of NCHRP projects and publications, visit TRB’s web site at and navigate to Cooperative Research Programs. Or visit the NCHRP site directly at .