A team of researchers from Cologne and New York has presented proposals for future traffic management. A dynamic, fair toll for road use could reduce congestion.
In the current issue of Nature, the economists Peter Cramton, Axel Ockenfels (both University of Cologne) and Richard Geddes (Cornell University) describe a concept in which drivers would have to pay a dynamic fee for the use of roads. This would contribute to avoiding traffic jams and protecting the environment, the researchers argue. Fees that respond to traffic volumes in real time and with site precision, taking into account factors such as vehicle type and exhaust emissions, can significantly improve traffic flow and contribute to reducing air pollution.
Traffic jams are not only annoying and time-consuming, they are also costly. In Germany, the economic damage caused by congested roads in 2017 totaled approximately €80 billion. “Currently, road users who cause traffic jams, while damaging the environment and even incurring costs, are paying just as much as those who are not involved,” says Ockenfels. “Without a toll, this means that the general public is subsidizing these road users. That’s unfair.” A toll for road use would bring these costs to light and reduce congestion. “If the fee adapts to the volume of traffic and the situation on the road in real time, i.e., is more expensive at rush hour than around noon, everyone can choose the route that suits them best. This already works for navigation systems,” explains Cramton. “Ultimately, this would reduce the load on main traffic arteries, improve traffic flow and reduce CO2 emissions.
