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Istanbul, Mexico City and Moscow top global stop-start index

Research from Castrol and TomTom has revealed drivers in Istanbul could experience 31,200 stop-starts a year, compared to the lowest ranked city, Rotterdam, where drivers might only experience 6,211 stop-starts, more than 24,000 fewer. Other cities in the study include Beijing with 28,200, London, with 21,000 stop-starts, New York, with 15,480, and Sydney with 13,200.
The study was carried out using information from satellite navigation systems on vehicles in 50 cities worldwide. The project highlights stop-start driving, including traffic, urbanization, and short journeys experienced in each area. Data from vehicles and trips within a region and time span was aggregated by TomTom, total driven kilometers and total number of stops calculated, and an average number of stops per driven km per region derived.
According to Castrol, stop-start driving can increase microscopic wear in car engines and that a normal driver can experience as many as 18,000 stop-starts every year. Castrol engineers also say that frequent stop-starts can cause increased wear to a car engine. As such, the number of stop-starts reflect the driving conditions and situations drivers are facing in each market. These results show the size of the stop-start problem and indicate that precautions are necessary.
Ralf-Peter Schäfer, head of traffic at TomTom, said: “The results from the index are fascinating and working with Castrol to produce the index has been very revealing. Istanbul’s highest stop rate among the big cities corresponds to its very high congestion level, followed by Moscow and Mexico City, certainly founded by heavy daily congestion as well. Traveling in Rotterdam, however, goes along with the lowest stop rate as the city has moderate congestion.”
Castrol has identified three levels of stop-start driving. Green represents a moderate level of stop-start driving, with drivers experiencing less than 8,000 stop-starts per year; amber represents a heavy level of stop-start driving, with drivers experiencing 8,000 stop-starts or more per year, while red represents a severe level of stop-start driving, with drivers experiencing 18,000 stop-starts or more per year.

11 October 2013


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