TY  - JOUR
PY  - 1988//
TI  - Computation of signalized intersection service volumes using the 1985 Highway Capacity Manual (with discussion and closure)
JO  - Transportation research record
A1  - Courage, Kenneth G.
A1  - Zen-Young Luh, John
SP  - 179
EP  - 190
VL  - 1194
IS  - 
N2  - The 1985 Highway Capacity Manual (HCM) signalized intersection analysis method has provided a powerful technique for determining how well an intersection will operate given the traffic volumes, intersection configuration, and signal timing. It has been less successful in producing a practical technique for determining the service volume for a specified level of service. The main problem is the irreversibility of the delay equation upon which the level of service is based. This paper explores a number of numerical analysis techniques for solving the delay equation in reverse. Specific computational procedures are demonstrated for determining the traffic volume which will produce a given delay. Both manual methods, using a worksheet, and computerized solution are presented. The main problem with determining service volumes results from the interactions among the independent variables of the delay equation, not from the need for a mathematical solution to the equation itself. Because of the complexities of the HCM technique, there are discontinuities in the volume-delay relationship. There are situations which require the simultaneous solution of two equations, and there are situations in which a unique solution does not exist. Several simple computational modules were developed to deal with specific situations covered in this paper. These are demonstrated using several sample calculations from Chapter 9 of the HCM.<p /> <p>Language: en</p>
LA  - en
SN  - 0361-1981
UR  - http://dx.doi.org/
ID  - ref1
ER  -