The Castrol Magnatec Stop-Start index, named for the British motor oil company that compiled it, looks at traffic conditions and number of annual start-stops per car in 78 cities around the world to determine how traffic affects journey times.
In first place is Jakarta with 33,240 start-stops per year followed by Istanbul, Turkey, with 32,520 start-stops, and Mexico City with 30,840.
Bangkok came in the eighth place with 27,480 start-stops.
Rotterdam in the Netherlands registered the last with 6360 stop-starts a year.
The index, which was put together using the GPS data provided by Tom Tom navigation users, said drivers experiencing more than 18,000 stop-starts a year experienced “severe” traffic. It warned that drivers should take actions to protect against stop-start engine wear.
Castrol used GPS measurements collected by Tom Tom navigation to come up with a start-stop average per kilometre. It then multiplied that number by the average distance driven per year in each city.
In 26 of those cities the index also looks at amount of time cars spend idling.
Some of the worst idling times were recorded in Thailand.
Almost 36.07% of an average driver’s travel time in Bangkok is spent in idling mode.
Other cities are Russia (Saint Petersburg, 35.84) Mexico (Guadalajara, 33.24) and China (Shanghai, 33.09).
Here’s a look at how the cities that made the top 10 worst traffic ranking measure up:
Jakarta, Indonesia (33,240); Istanbul, Turkey (32, 520); Mexico City, Mexico (30,840); Surabaya, Indonesia (29,880); St. Petersburg, Russia (29,040); Moscow, Russia (28,680); Rome, Italy (28,680); Bangkok, Thailand (27,480); Guadalajara, Mexico (24,840).
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