engleski

Motorway Bottleneck Detection Using Speed Transition Matrices

Motorway bottlenecks are commonly occurring in developed countries with increased commercial activities. As opposed to the traffic jam, the source of the bottleneck is often a result of a specific traffic situation like traffic accidents, sudden breaks, or bad road design. They could be described as a sudden capacity drop that creates congestion on the part of the motorway that propagates in the downstream flow. More formally, free flow (normal traffic flow) could be described with equation $q_{; ; in}; ; \approx q_{; ; out}; ; $, where $q_{; ; in}; ; $ represents upstream flow and $q_{; ; out}; ; $ represents downstream traffic flow on the observed part of the motorway. The bottleneck manifested through the decrease of the downstream traffic flow due to the congestion. There are two types of bottlenecks: recurrent and non-recurrent. The recurrent bottlenecks are caused due to the influence of daily commuters and transit traffic. At the same time, non-recurrent are often the result of traffic anomalies like traffic accidents or some unexpected events.

Speed Transition Matrices ; Bottleneck Detection ; Anomaly Detection

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