4 thoughts on “TomTom Traffic Index Ranking

  1. shinichi Post author

    TomTom Traffic Index
    Ranking 2021


    Covering 404 cities across 58 countries on 6 continents, our Traffic Index ranks urban congestion worldwide and provides free access to city-by-city information. You, along with drivers, city planners, automakers and policy makers, can use the index to help tackle traffic-related challenges.

  2. shinichi Post author

    The world’s most traffic-choked cities, ranked

    Cities in Asia and South America dominate the “top” of the list. Los Angeles, the US’s worst, finishes 31st.




    Traffic congestion worsened last year in most of the 436 cities rated by Dutch navigation company TomTom.


    If you had to drive somewhere in Bengaluru, India, last year, your best bet would have been to make your move on April 6. That Saturday, the average drive in the city formerly known as Bangalore took 30 percent longer than it would have had the roads been empty. No easy trip, sure, but far quicker than most: Over the course of 2019, on average, congestion increased drive times by 71 percent. During evening rush hours, anyone driving what should have been a 30-minute trip spent more than an hour and five minutes behind the wheel.

    Those figures give the megacity the unwelcome distinction of hosting the world’s worst traffic, according to the 2019 edition of TomTom’s Traffic Index. Rounding out the “top” five are Manila, Bogotá, Mumbai, and Pune. The report, which the Dutch navigation and mapping company released Tuesday, ranks cities by the average time added to a trip. It also includes details on when congestion is heaviest and lightest, how highways compare with surface streets, and how much time drivers wasted waiting for other drivers to get out of their way. (As the adage says: You’re not in traffic, you are traffic.)

    So you can see that the best time to drive in Paris is in mid-August, when the whole country goes on vacation. And that the evening rush hour in Cairo adds nearly twice as much time to the average trip as the morning commute. And that while Angelenos have the right to gripe about America’s worst traffic, the city’s 42 percent congestion level looks peachy compared to the megacities of India and southeast Asia. (Trailing Los Angeles in the US top five are New York, San Francisco, San Jose, and Seattle.)

    It’s easy to see why cities in India, Southeast Asia, and South America dominate the top of this list. “It’s partly a matter of a huge economic success,” says Nick Cohn, who runs TomTom’s traffic data business. “But also a complete inadequacy of alternatives for the public to get around.” Bengaluru, for example, has seen its population roughly double since 2001. The roads, traffic management, and transit systems that are needed to move all those new residents with some measure of efficiency just aren’t there.

    TomTom pulls its data from the more than 600 million drivers who use its maps, whether on an old school aftermarket navigation device, via their car’s built-in navigation system, or a smartphone app. Users don’t have to see the TomTom logo to be part of its data: The company provides data for Apple Maps, and recently struck a deal to do the same for Huawei.

    TomTom’s list of the world’s 10 most congested cities. (TOMTOM)

    The traffic report is available for free, but cities that want the kind of data deep dive necessary for actually easing congestion will have to pay up. TomTom offers real-time traffic data, an “event reporter” that logs things like road closures, historical data dating to 2008, analyses of which routes drivers prefer over others, and more.

    On the off chance that confirming your city is horribly congested isn’t bad enough, the report also tracks traffic from one year to the next—and the numbers aren’t encouraging. From 2018 to 2019, traffic worsened in a majority of the 436 ranked cities; few saw improvements. In the US, at least, some of that can be blamed on the strong economy. More people working means more people driving. It also means more congestion in 44 of the 80 US cities listed. Just five—Columbus, Detroit, Louisville, Milwaukee, and Cleveland—showed drops, all of them modest.

    When it comes to bringing those gains to more cities, TomTom’s Cohn urges city planners against trying to make driving easier. “I really don’t believe that it’s possible, at least on the road side, to build our way out of congestion,” he says. He advises better traffic management: things like better synchronized traffic lights, but also more buses, better cycling infrastructure, and smarter tools to guide people away from cars. Helsinki, for example, lets people plan and pay for multimodal journeys in a single app, so they don’t have to cobble together disparate information on transit schedules, bike share locations, and so on. “You don’t have to add capacity,” Cohn says. “You just have to use what you have in a smarter way.”

  3. shinichi Post author


    Wired Japan








    カーナビやデジタルマッピングの技術を開発するオランダのトムトムが20年1月29日付で発表した2019年版「TomTom Traffic Index」によると、ベンガルールは「世界で最も交通渋滞がひどい都市」というありがたくない称号に輝いた。ベンガルールに続いて「トップ5」にランクインした都市は、フィリピンのマニラ、コロンビアのボゴタ、そしてインドのムンバイとプネーである。

    TomTom Traffic Indexは、1回のドライヴに追加される平均時間に基づいて各都市をランクづけしている。このレポートには、最も混雑する時間帯と混雑しない時間帯、高速道路と一般道の比較、ほかのクルマが道を空けるまで待つドライヴァーがどれだけの時間を無駄にしたのかなどについても、詳しく説明されている(格言でも言われている通り、「あなたが渋滞に巻き込まれているのではなく、あなた自身が渋滞なのだ」)。



    インドと東南アジア、南米の各都市がTomTom Traffic Indexの上位を独占しているが、その理由は想像に難くない。「要因のひとつは、経済の著しい発展です」と、トムトムの交通データ事業を統括するニック・コーンは語る。「その一方で、市民が渋滞を回避するための代替策が決定的に不足しているという事情もあります」



    TomTom Traffic Indexは誰でも無料で閲覧できる。ただし、交通渋滞の緩和に必要なデータを掘り下げたい都市などの場合は、料金の支払いが必要になる。またトムトムは、ウェブアプリ「Road Event Reporter」で、交通データをリアルタイムで提供している。このアプリでは、道路の閉鎖情報や08年以降の過去データ、ドライヴァーが好むルートの分析などを提供している。

    これらの都市の交通渋滞がひどいことを明らかにするだけでは足りないと言わんばかりに、TomTom Traffic Indexは毎年の交通量の推移も追跡している。そして、この数字は希望がもてるものではない。








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