Nissan project in Beijing demonstrates Dynamic Route Guidance reduces fuel consumption and CO2 emissions
Results from Nissan’s New Traffic Information System Model Project in Beijing (earlier post) have demonstrated that Dynamic Route Guidance System (DRGS) can help alleviate traffic congestion and reduce fuel consumption. A simulation based on the project results suggested that when 10% of all traffic in Beijing used DRGS, due to reduced traffic congestion, travel speed throughout the city would increase by approximately 10% and both fuel consumption and CO2 emissions would decrease by approximately 10%.
DRDS distributes real-time traffic information from the traffic information center to onboard devices via telematics; the onboard devices show drivers the fastest route on the display. This large-scale project, involving 12,000 vehicles, is the first to demonstrate and measure traffic dispersion effects in a real setting.
Nissan and the Beijing Municipal Commission of Transport started the test in January 2012, distributing Portable Navigation Devices (PNDs) to 12,000 trial users in the Wangjing district in Beijing.
|Basics of the New Traffic Information System Model Project. Click to enlarge.|
A Memorandum of Understanding (MOU) to conduct the project was signed by Nissan, the National Development and Reform Commission, the Beijing Municipal Development and Reform Commission and the New Energy and Industrial Technology Development Organization (NEDO) and PNDs were provided to trial users, allowing them to use DRGS and Eco-Drive Management System (EMS).
EMS promotes eco-driving by showing drivers their fuel economy. It assists with continuous eco-driving by providing advice and making a comparison with other drivers through eco-drive ranking.
After one year of testing, results have shown that the use of DGRS and EMS contributes to saving energy and reducing emissions. The DRGS helped reduce average travel time by 5.1% and increased fuel economy by 7.6% among users. Enabling the drivers to avoid congested roads led to the dispersion of traffic flow, enhancing overall driving speed within the region.
Furthermore, EMS helped increase fuel economy by 6.8% by helping users cultivate better driving habits.