This paper proposes a new modeling approach for network-wide on-line travel time estimation with inconsistent data from multiple sensor systems. It makes full use of both the available data from multiple sensor systems (on-line data) and historical data (off-line data). The first- and second-order statistical properties of the on-line data are investigated together with the data inconsistency issue to estimate network-wide travel times. The proposed model is formulated as a generalized least squares problem with non-linear constraints. A solution algorithm based on the penalty function method is adopted to solve the proposed model, whose application is illustrated by numerical examples using a local road network in Hong Kong.
Network-wide on-line travel time estimation with inconsistent data from multiple sensor systems under network uncertainty
Transportmetrica A: Transport Science ; 14 , 1-2 ; 110-129
2018-01-02
20 pages
Article (Journal)
Electronic Resource
English
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