首页|Generalized Speed-Density Models for Urban Freeways under Rainy Weather
Generalized Speed-Density Models for Urban Freeways under Rainy Weather
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Based on Shanghai elevated road traffic flow， six kinds of speed-density models are calibrated by least square method for clear and rainy weather and the respective best models to estimate free-flow speed and capacity are determined。 Next， the function between free-flow speed and rainfall intensity is also fitted and it is integrated into generalized speed-density models。 It is found that both weather and number of lanes influence free-flow speed and capacity， and generalized speed-density models also vary with different combination of weather and number of lanes。
Free-flow speedCapacityLeast square methodRainfallNumber of lanes
Hongyun Sun、Jinshun Yang、Bing Wu
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Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, No. 4800 Cao'an Rd., Shanghai 201804
International conference on transportation engineering
Dalian(CN)
Fifth international conference on transportation engineering 2015
NETL
