Based on the Floating Car Data(FCD) in Beijing,this paper first compares temporal measurements for the morning periods of two workdays,i.e.,the time percentage of traffic congestion and the congestion duration.Then,it introduces the Survival Function to describe the congestion duration distribution,which is found after the curve fitting that it can be better described by the LogLogistic model.Further,it compares the congestion duration distributions on different links.In addition,through analyzing comparati...