Some Properties of Flows at Freeway Bottlenecks

Some Properties of Flows at Freeway Bottlenecks

The capacity of a freeway segment should be measured only when it is an active bottleneck. The properties of flows at active freeway bottlenecks have a bearing on both the definition of capacity and the procedure of capacity analysis. Past studies have examined the flow features at bottlenecks on several freeways in Toronto, Canada, and San Diego, California. This study examined 27 active bottl...

Some traffic features at freeway bottlenecks

Observations from two freeway bottlenecks in and near Toronto, Canada indicate that the average rate vehicles discharge from a queue can be 10% lower than the flow measured prior to the queue’s formation. Absent any influences from downstream, the queue discharge flows exhibited nearly stationary patterns that alternated between higher and lower rates. These alternating flow patterns were espec...

Traffic Behavior at Freeway Bottlenecks

Systematic Identification of Freeway Bottlenecks

We present an algorithm that identifies bottleneck locations, the times for which each bottleneck is active and the delay it causes. The bottlenecks are ranked in terms of their frequency of recurrence and the magnitude of their delay impact. The algorithm works with five-minute loop detector data. It uses speed difference as an indicator of bottleneck activation. The algorithm is applied to th...

some properties of fuzzy hilbert spaces and norm of operators

in this thesis, at first we investigate the bounded inverse theorem on fuzzy normed linear spaces and study the set of all compact operators on these spaces. then we introduce the notions of fuzzy boundedness and investigate a new norm operators and the relationship between continuity and boundedness. and, we show that the space of all fuzzy bounded operators is complete. finally, we define...