Bureau Of Public Roads

Some of the research activities of the Bureau of Public Roads include physical and chemical testing of paving mixtures, road materials, and soil materials the design and characteristics of nonrigid pavements and concrete pavements and related topics. 

All of the major publications of the bureau are announced in its list entitled Publications of the Bureau of Public Roads, which is available on request from the Bureau of Public Roads, Washington 25, D.C. In addition, all bureau publications are listed in U. S. Department of Commerce Publications, and CPO Price List 25 Transportation, Highways, and Roads. These announcement publications are available from CPO and have been described elsewhere in this paper. The Bureau of Public Roads also publishes a bimonthly journal titled Public Roads, A Journal of Highway Research, which contains two or three research papers per issue. It is available from GPO at 1 per year (50 cents additional for foreign mailing) or 20 cents per single issue. A classified subject list of the more important articles that have appeared in Public Roads may be obtained upon request from the Bureau of Public Roads, Washington 25, D.C. 

As for the evacuation by car, the calculation of evacuation activity time is based on both road right of each section of roadway and selected evacuation path. The road right of evacuation path means the travel (migration) time of certain section of evacuation path, including the vehicles travel time in the transfer road and waiting time in the intersection. Road right is expressed with road resistance function, including, the road resistance function proposed by Bureau of Public Road is widely apphed now, as shown below ... 

Joseph Newell Bradley graduated as eivil engineer from University of Illinois, Urbana IL. He joined the US Bureau of Reclamation USBR, Denver, early in the 1930s staying there imtil 1955, when joining the Hydraulie Researeh Seetion of the Bureau of Public Roads, Washington DC. From the 1980s, Bradley was a private eonsultant. 

Bradley, J.N. (1952). Discharge coefficients for irregular overfall spillways. USBR Denver. Bradley, J.N. (1970). Hydraulics of bridge waterways. US Bureau of Public Roads. US. Govt. Printing Office Washington DC. 

Carl Frederick Izzard obtained the AB degree from Stanford University, Stanford CA, in 1930, and the MS degree in mechanics and hydraulics from Iowa State University, Iowa City lA, in 1940. He joined the Bureau of Public Roads in 1930, first for time and cost studies in highw construction, from 1933 to 1939 as federal aid inspector in Texas, and later until 1949 as drainage engineer. He was then until retirement chief of the Hydraulic Research Division,... 

Ever since and until the end of the 1960s, many other devices were developed, namely, the Benkelman profilometer (1922), the Hveem profilograph (1929), BPR (Bureau of Public Roads) road roughness-trailer unit device (1941), the AASHTO profilometer (1960s), CHLOE profilometers (the initials come from the names of the inventors) (1960s) and others. Details of all the devices mentioned can be found in Hveem (1960) and Less (1974). 

Fig. 32.1 The interstate highway system in 1947. (Source Bureau of Public Roads, 1955)...

In 1957 a Bureau of Public Roads official referred to the Interstates as America s new design for living (Weingroff, 2006 6). It has proven a remarkably accurate statement, though it appears that many at the time were uncertain as to exactly what that design would be. 

Bureau of Public Roads. (1955). General location of national system of Interstate highways. Washington, DC Department of Commerce. 

Seely, B. E. (1988). The diffusion of science into engineering. Highway research at the Bureau of Public Roads, 1900-1940. In P. J. Hugill D. B. Dickson (Eds.), The transfer and transformation of ideas and material culture (pp. 143-162). College Station, TX Texas A M University... 

Solomon, D. (1964). Accidents on Main Rural Highways Related to Speed, Driver, and Vehicle. Bureau of Public Roads, U.S. Department of Commerce, July. 

Lee, D. W., and J. E. Breen (1966), Factors Affecting Anchor Bolt Development, Research Report 88-lF, Project 3-5-65-88, Cooperative Highway Research Program with Texas Highway Department and U.S. Bureau of Public Roads, Center for Highway Research, University of Texas, Austin Austin, TX. 

---