TY  - JOUR
PY  - 1962//
TI  - A theory of traffic flow for evaluation of geometric aspects of highways
JO  - Highway Research Board bulletin
A1  - Harr, Milton E.
A1  - Leonards, Gerald A.
SP  - 87
EP  - 91
VL  - 308
IS  - 
N2  - An analytic approach is developed whereby the various aspects of a highway (such as curves, grades, lane width, traffic control devices, type and condition of surfacing) can be evaluated quantitatively under varying traffic density and weather conditions providing a rational basis for geometric design. In the present analysis it is postulated that traffic reacts to a motivating pressure potential in a pattern that determines the behavior of any particular vehicle traversing a given section of roadway. This concept can be expressed quantitatively in a manner analogous to that used in describing one-dimensional viscous flow in a compressible fluid. Solution of the resulting differential equation yields a parameter which is a numerical measure of the salient characteristics of a road. Procedures are then proposed to determine this parameter, using measurable vehicular velocities, which eliminate the need for evaluating the motivating pressure potential.<p />
LA  - 
SN  - 0073-2206
UR  - http://dx.doi.org/
ID  - ref1
ER  -