, ? Document and share your data ? Publish your research ? Read (and cite) the others' work, including " classic, p.28

N. Some-references-by-arthur, @. A. Johnson, and . Johnson, Road traffic census. In First annual report of the Illinois Highway Commission for the year 1906, pp.22-29, 1907.

@. A. Johnson, Elements governing the growth of highway traffic, Transactions of the American Society of Civil Engineers, vol.89, issue.1, pp.259-267, 1926.

@. A. Johnson, A method of measuring relative efficiency of traffic flow through street intersections, HRB Proceedings, pp.81-85, 1926.

@. A. Johnson, Maryland aerial traffic density survey, HRB Proceedings, pp.244-247, 1928.

@. A. Johnson, Maryland aerial survey of highway traffic between Baltimore and Washington, HRB Proceedings, pp.106-115, 1929.

@. A. Johnson, Traffic capacity, HRB Proceedings, pp.218-224, 1931.

@. A. Johnson, Notes on traffic speed, HRB Proceedings, pp.351-362, 1934.

, Works cited (besides A

@. Leslie, C. Edie, and @. , Discussion of traffic stream measurements and definitions, Proceedings of the Second International Symposium on the Theory of Road Traffic Flow, pp.139-154, 1963.

@. Bruce, D. Greenshields, and @. , The photographic method of studying traffic behavior ? A study of traffic capacity, HRB Proceedings HRB Proceedings, pp.382-396, 1934.

@. Michael, J. Lighthill, and B. Gerald, Whitham ? On kinematic waves. I. Flood movement in long rivers, Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, pp.229-1178, 1955.

@. On-kinematic-waves and . Ii, A theory of traffic flow on long crowded roads, Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, pp.229-1178, 1955.

@. Olav, K. Normann, and @. , Results of highway capacity studies Public Roads, ? Highway Capacity Manual (HCM), pp.23-27, 1942.

@. John, G. Wardrop, and @. , Some Theoretical Aspects of Road Traffic Research, Proceedings of the Institution of Civil Engineers, pp.1-3, 1952.