TY  - JOUR
PY  - 2022//
TI  - Calibration of dynamic volume-delay functions: a rolling horizon-based parsimonious modeling perspective
JO  - Transportation research record
A1  - Pan, Yuyan
A1  - Guo, Jifu
A1  - Chen, Yanyan
SP  - 606
EP  - 620
VL  - 2676
IS  - 2
N2  - Volume-delay functions (VDF) are the critical building block in static traffic assignment and general demand-supply analysis. This paper aims to provide a rolling horizon-based modeling framework to establish and further calibrate dynamic VDF (DVDF) for a corridor. The development and application of classic VDF in recent traffic planning studies are first reviewed. Analytical formulas based on a rolling horizon framework are then developed to redefine critical elements in the Bureau of Public Roads (BPR) function to capture the time-dependent volume-delay relationship. Time-dependent average demand and discharge rate are used in a real-world bottleneck in oversaturated conditions. By constructing an estimate or approximate for the dynamic degree of saturation, the proposed method could (i) better interpret the underlying mechanism of the time-dependent demand-delay function; (ii) provide a valuable tool to estimate the speed for a time rolling horizon with given real-time data in practice, and (iii) analyze the correlation between a bottleneck and upstream or downstream on a road network to acquire accurate discharge rates for different situations. Experiments using corridors in Beijing and Los Angeles demonstrate that the proposed dynamic analytical methods can outperform the traditional BPR function in dynamic congestion cases. The results improve the DVDF goodness-of-fit from
LA  - en
SN  - 0361-1981
UR  - http://dx.doi.org/10.1177/03611981211044727
ID  - ref1
ER  -