This paper considers the evolution of global transportation usage over the past half century and its implications for supply chains. Transportation usage per unit of real output has more than doubled as costs decreased by a third. Participation of emerging economies in world trade and...

Traffic courts are deeply important, but we know almost nothing about what goes on inside them. There are at least three reasons to care. First, traffic courts resolve over half of all cases brought into our justice system each year. Understanding how traffic courts work is thus crucial for...

Road traffic jams are a major problem in most cities of the world, resulting in massive delays, increased fuel wastage, and monetary and productivity losses. Unlike conventional computer networks, which experience congestion due to excessive traffic, road transportation networks can experience...

In the course of the so-called requirements plan review, a fundamental discussion is taking place about the priorities in federal trans-port infrastructure planning. Numerous interest groups are calling for a sole focus on climate protection and environmental goals. This paperargues that such a...

Leere Bahnhöfe, verwaiste Straßen: Der Verkehrssektor gehörte zweifellos zu den markantesten Ausprägungen der COVID-19-Pandemie. Nachdem der gesellschaftliche Krisenzustand seit Frühjahr 2023 offiziell als überwunden gilt, untersucht die vorliegende Studie, wie drei Jahre Pandemie das...

Railway traffic flow in a corridor can be modeled by a string of consecutive trains, each subject to random speed variations that are described by a stochastic process. Despite analogies with car-follower models, railways include specific features and a safety system that forces vehicles to...

Highway construction occurs nowadays mainly through widening of existing roads rather than building new roads. This paper documents that highway widenings considerably reduce congestion in the short run, defined here as 6 years. Using longitudinal microdata from highway detector loops in the...

Like most others, traffic economists also treat a vertical line for the capacity of a road. When traffic flow approaches the vertical line, there will be congestion, while the line itself is a gridlock. This paper re-runs the traffic mathematics thoroughly, to derive some surprisingly new...

In future connected vehicle environment, the information of multiple vehicles ahead can be readily collected in real-time, such as the velocity or headway, which provides more opportunities for information exchange and cooperative control. Meanwhile, gyroidal roads are one of fundamental road...

Maritime transport contributes significantly to environmental pollution. The Mediterranean Sea Area is particularly affected by marine emissions from particulate matter, black carbon, nitrogen oxides and sulphur oxides. In addition to international and crossing traffic, the Mediterranean Sea is...

Motivated by the need for transportation infrastructure and incident management planning, we study traffic density under non-recurrent congestion. This paper provides an analytical solution approximating the stationary distribution of traffic density in roadways where deterioration of service...

Road safety for fleets of vehicles has been neglected in the insurance literature, mainly because appropriate data is not available. This paper makes a threefold contribution: 1) Produce statistics on current fleets’ road safety offences using a panel of 20 years of data on truck fleets; 2)...

Every year, nearly 5,000 patients die while waiting for kidney transplants, and yet an estimated 3,500 procured kidneys are discarded. Such a polarized co-existence of dire scarcity and massive wastefulness has been mainly driven by insufficient pooling of cadaveric kidneys across geographic...

We examine the eff ectof citywide parking policy on parking and traffic demand. Using a large increase in on-street parking prices for the city of Amsterdam, we show that the policy caused a substantial drop in on-street parking demand, which is not off set by an increase in off -street demand....

Viele aktuelle Probleme im Luftverkehr hängen mit der Zahl der Flugbewegungen zusammen. Überfüllungen im Luftraum, erschwerte Koordination an Flughäfen, hohe Emissionen von Lärm und Schadstoffen sowie große Komplexität der Airlines sind Begleiterscheinungen zu vieler Flugbewegungen. Die...

Many current problems in air traffic are related to the number of aircraft movements. Overcrowding in the airspace, difficult coordination at airports, high emissions of noise and pollutants as well as complexity of airlines are side effects of too many aircraft movements. This study examines...

We examine the effect of citywide parking policy on parking and traffic demand. Using a large increase in on-street parking prices for the city of Amsterdam, we show that the policy caused a substantial drop in on-street parking demand, which is not offset by an increase in off-street demand....

In classical traffic flow theory, there are two velocities associated with a given level of traffic flow. Following Vickrey, economists have termed travel at the higher speed congested travel and at the lower speed hypercongested travel. Since the publication of Walters. classic paper, there has...

Mirroring the railroad industry of the 1940's and 1950's, the trucking industry today appears to be achieving impressive productivity gains. But it is easy to confuse true productivity advances in transportation industries with changes in ton-miles per unit of input that are due simply to...

The authors of the article analyze the essence of terrorism and its manifestation in transport. Particular attention is paid to assessing the reasons why the transport infrastructure is the most interesting object of terrorist attacks. The levels at which it is necessary to conduct...

This paper considers the evolution of global transportation usage over the past half century and its implications for supply chains. Transportation usage per unit of real output has more than doubled as costs decreased by a third. Participation of emerging economies in world trade and...

Urban noise depends on several factors from which Traffic Noise is the most important. City centers and main access roads are usually over exposed that is, average day-evening-night noise level [LDEN] and/or rest expose level [LNIGHT] surpasses a threshold of healthy exposure. About 35M...