Although transit or road capacity increases are historically very common subjects of economic analysis, the implementations of intelligent transportation systems (ITS) strategies have been receiving increasing attention as resources for capacity expansion become increasingly scarce. There exists a strong business case for lower cost strategies to more efficiently deliver transportation in ways ...

We analyze the east-bound arrival flow to Tokyo International Airport. Currently, aircraft are vectored in the en-route sector that is adjacent to the approach area, in order to meet a metering constraint. These vectors take place largely during the descent phase. In the future, arrival traffic shall be ‘synchronized’ in the cruise phase for less controller workload and more fuel efficiency. Ou...

Traffic on freeways can be managed by means of ramp meters from Road Traffic Control rooms. Human operators cannot efficiently manage a network of ramp meters. To support them, we present an intelligent platform for traffic management which includes a new ramp metering coordination scheme in the decision making module, an efficient dashboard for interacting with human operators, machine learnin...

Congestion on motorways is a serious problem of modern societies. It reduces the nominal capacity of the motorway infrastructure, with serious impact on travel times, traffic safety, fuel consumption and environmental pollution. Various traffic management measures have been proposed to alleviate traffic congestion but are known to face limitations. An integrated motorway traffic flow control co...

By introducing a new dynamical linearization technology, this paper presents a model-free adaptive control approach for density control of freeway traffic flow via ramp metering, which is consisted with a control input learning law and a parameter updating law. The design and analysis only depends on the I/O data of the freeway traffic system. Furthermore, the control input learning law is exte...

Empirical observations and theoretical studies indicate that the overall travel-time of vehicles in a traffic network can be optimized by means of ramp metering control systems. Here, we present an analysis of traffic data of the highway network of North-Rhine-Westfalia in order to identify and characterize the sections of the network which limit the performance, i.e., the bottlenecks. It is cl...

The Highways Agency (HA) is developing the concept of Active Traffic Management (ATM) schemes which will coordinate operational regimes such as controlled use of the hard shoulder as a running lane, variable speed limits and ramp metering. The pilot ATM scheme is planned to be implemented on the eastern section of the M42 between Junctions 3a and 7 by 2006. To ensure the success of all these me...

In this work, a revised iterative learning control based ramp metering algorithm with compensation for the iteration-depended traffic free speed is proposed. This control method works well when free speed is iteration-varying, which is the most common situation for the freeway traffic system. With rigorous analysis, the proposed control scheme guarantees the asymptotic convergences along the it...