oksimovic developed a simulation model that can help policy makers to estimate the consequences of various toll charges. The model predicts, where, when and how much toll must be charged for the desired policy outcomes, such as reducing the total travel time of all travellers or maximising the toll incomes (revenues).
Based on a toll value entered, the model iteratively calculates the impacts on road congestion and the total toll incomes and searches for an optimal composition of the toll charge.
The model contains a number of variables. For example, it takes into account the different characteristics of travellers. People who want to be at a preferred destination by a given time are more inclined to pay more during rush hours than people who want to travel as cheaply as possible and are flexible with respect to their arrival time. A flexible toll charging system in which car drivers must pay more at peak times than off-peak times leads to less traffic jams, but also maximum toll incomes.
Various factors play a role in the problem of toll charges: the government wants to minimise both the total travel time of all travellers and harmful environmental effects whilst at the same time maximising toll incomes to pay, for example, for roadworks. Individual motorists mainly want to make their journeys as quick and cheap as possible. These considerations lead to a complex decision model in which the various variables are dependent on each other. The instrument that Joksimovic developed during her doctoral research can provide policy makers with a quicker insight into the outcomes of policy measures.
Dusica Joksimovic | alfa
Researchers 'count cars' -- literally -- to find a better way to control heavy traffic
10.08.2017 | Florida Atlantic University
From parking garage to smart multi-purpose garage
19.07.2017 | Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
18.08.2017 | Life Sciences
18.08.2017 | Physics and Astronomy
18.08.2017 | Materials Sciences