The En-route Descent Advisor (EDA) is a set of decision support tool (DST) capabilities for managing complex en route traffic subject to metering restrictions. The goal is to enable controller procedures to evolve from today’s emphasis on sector management towards procedures more oriented towards trajectory management. EDA will help controllers transition traffic from a “Free Flight” (minimally...

In this paper we present a hardware metering method to meter or monitor legitimate use of integrated circuits embedded in a computer system. The motivation for this work comes from fabless semiconductor design business/operation model which has become very effective and popular in last few years. A fabless design house produces a design and gives it to a foundry to manufacture the final chip. O...

Measurements taken downstream of freeway/on-ramp merges have verified that discharge flow diminishes when a merge becomes an active bottleneck. We show that metering the on-ramp can recover the higher discharge flow and thereby increase merge capacity. Detailed observations collected using video revealed that the outflow drop following activation was triggered by a queue that formed near the me...

A System-Wide Adaptive Ramp Metering (SWARM) system has been implemented in the Portland, Oregon metropolitan area, replacing the previous pre-timed ramp-metering system that had been in operation since 1981. SWARM has been deployed on six major corridors and operates during the morning and afternoon peak hours. This paper reports on the results of a “before” and “after” evaluation of the perfo...

The user acceptance of prepayment metering systems, an innovative Information Technology based application, is examined with the help of a structural equation model in the two different cultures of India and the United States. The intention to use prepayment metering systems is measured along three dimensions: performance expectancy, effort expectance, and social influence. The same measures of...

Currently, Traffic Management Coordinators in the Air Route Traffic Control Centers establish flow constraints at various sector meter fixes, based on their best estimates of the predicted traffic demand into their sector. Sector flow rates are not coordinated between neighboring sectors or centers. Incorrect sector metering rates can lead often lead to a cascade effect resulting in delays in t...

In this paper, we present a novel switching traffic-responsive ramp-metering controller that adapts to the different traffic dynamics under different congestion conditions—free-flow or congested. The approach of multirate linear quadratic control with integral action (LQI) is employed to compensate for disturbances and to accommodate the difference between the model sampling time and the meteri...

This paper discusses the optimal coordination of variable speed limits and ramp metering in a freeway traffic network, where the objective of the control is to minimize the total time that vehicles spend in the network. Coordinated freeway traffic control is a new development where the control problem is to find the combination of control measures that results in the best network performance. T...

Automated metering is expected to be an integral part of the modern energy grid. Automated metering entails transport of metering data from the energy consumer’s premises to the data management systems of the energy provider and potentially information in the other direction. This paper describes a practical mesh networking solution based on extensions proposed to the routing protocol for low p...