Green mobility on the road

The transport of people and goods is responsible for a total of 25 to 30 percent of the world's final energy consumption. The greatest potential for reducing energy consumption is in the area of road traffic. At the same time, a Siemens study based on a model urban district in Munich shows how an almost carbon-free city can become a reality through the coordination of numerous measures to increase the energy efficiency.

Electric bus eBus/eBRT

Bus transportation is an important backbone of the urban public traffic system. The evolution of buses can be traced from combustion engines to hybrid technology and further in the direction of purely electricity powered buses. The operating costs (energy and service) of our eBuses are about 25% lower than those of similar combustion engine powered buses.
Zero local CO2 emissions, reduced noise and energy savings due to excellent efficiency and optimized energy recuperation complete the picture of the eBus.

Intermodal traffic management

In Halle, Germany, more than 50 percent of drivers have switched to trams since the introduction of an intermodal traffic concept. The system informs drivers of the current traffic situation and free parking spaces as well as the departure time of the next tram. As a result, the intelligent networking of Sitraffic system modules has optimized traffic flow in the city of Halle and made using public transportation even more attractive.

Adaptive street lighting

Dynamic management of street lighting allows energy consumption and therefore operating costs to be reduced considerably - all the while ensuring traffic safety. Traffic and street illumination are managed in close coordination, and street lights are adjusted automatically according to the current traffic situation. This adjustment ensures that street lighting only runs at full load when the volume of traffic requires it. At other times, for example late at night, the lighting intensity can be reduced sharply, resulting in energy savings of up to 60%.

City toll systems

With its city toll, the British capital of London has reduced the number of vehicles per day by 60,000 and emissions per year by 150,000 tons. Intelligent video systems from Siemens use “video scene analysis” to record license plate numbers and compare them to a database, thus determining whether the toll was paid. This has substantially reduced London traffic, and traffic flow has improved by over 35 percent.

Adaptive traffic control

The “green wave” in Muenster, Germany, helps the city reduce CO2 emissions by 1,000 tons a year. The Sitraffic Motion adaptive network control system flexibly adjusts traffic signals to the amount of traffic, thus reducing congestion, noise and emissions. At the same time, it speeds up traffic – by up to 15 percent in Muenster.

LED signaling systems

Signaling systems based on LED technology reduce energy costs by up to 90 percent. LEDs consume only a tenth as much energy as standard incandescent bulbs, but that’s not the only reason more and more operators are adopting this new technology. LEDs also last ten times longer than conventional incandescent bulbs and thus pay for themselves twice over.

Environmentally-conscious traffic management

Traffic-related emissions of harmful substances can be reduced through the strategic management of urban transport based on environmental and traffic data. The control level within the traffic management control center captures a range of relevant environmental data and decides, based on its stored environmental and traffic-related threshold values, how the traffic signals are operated strategically in order to redirect traffic. Environmentally-sensitive control programs inside the traffic signals therefore reduce or avoid the environmental impact caused by traffic within a particular area. Information panels notify transport users about raised pollution levels and any resulting changes to the traffic management measures in force.


The electrification of road freight traffic with eHighway is an economical alternative to the use of fossil fuels in freight transport. Green, efficient and resource-friendly. eHighway trucks are supplied with electrical energy via overhead lines. An adaptive current collector provides the contact between the vehicle and the overhead line. If the contact with the overhead line is interrupted, for example while overtaking or when traveling on non-electrified routes, the eHighway truck automatically switches over to its diesel-hybrid drive. In operation it is therefore just as flexible and universal as a conventional truck. eHighway offers considerable advantages in particular where rail transport is not possible due to economic or space-related restrictions.

Satellite-based mobility management

Also state-of-the-art satellite navigation offers ways to optimize our traffic and logistics solutions – for example we offer a full range of Sitraffic Sensus components , systems and services needed for satellite-based toll collection systems. Including on-board units that reliably calculate with meter accuracy via satellite without expensive infrastructure facilities. It will also permit the implementation of other entirely new applications, from forward-looking traffic flow control and reduced traffic jams and CO2 emissions to the intermodal tracking and monitoring of goods and vehicles.