TY  - JOUR
PY  - 2006//
TI  - Gravity models for dynamic transport planning: Development and implementation in urban networks
JO  - Journal of transport geography
A1  - Tsekeris, Theodore
A1  - Stathopoulos, Antony
SP  - 152
EP  - 160
VL  - 14
IS  - 2
N2  - This paper describes the development and comparison through a real-life implementation of dynamic extensions of the entropy-based gravity model of trip distribution for dynamic transport planning purposes in urban networks. The single dynamic gravity model (SDGM) accounts only for the inter-period (long-term) evolution of travel demand. The doubly dynamic gravity model (DDGM) takes into account both the inter-period and intra-period (short-term or within-day) evolution of travel demand. The computational analysis and explanation of the differences between the two models are demonstrated in relation to different demand inputs, model parameters and performance measures.<p /> 
LA  - 
SN  - 0966-6923
UR  - http://dx.doi.org/10.1016/j.jtrangeo.2005.06.009
ID  - ref1
ER  -