Skip to main content

Where does Google get it's live traffic data from?

Referring to a post that I wrote earlier, Google’s - Live traffic Layer, ever wondered how Google collected this data? I was wondering the other day, how Google received live data to display it on their maps as a layer! I looked up the web and found something very interesting and am sharing the same with you all.

As we all know, the traffic layer is available most accurately in several states in USA. Most major metro areas in the US have sensors embedded in their highways. These sensors track real time traffic data. Easy to miss at high speeds (hopefully anyway, traffic permitting), more commonly noticed may be the similar sensors that often exist at many busy intersections that help the traffic lights most efficiently let the most amount of people through. The information from these tracking sensors is reported back to the Department of Transportation (DOT). The DOT uses this data to update some of the digital signs that report traffic conditions in many metro areas. They also openly share much of this frequently updated data out, which is how Google reportedly gets this data for the major highways in the metro areas it offers traffic reporting for.

Google has now also crowd sourced the collection of real time traffic data via mobile phones. The way in which they are doing this is pretty cool, and may prove to be a way to some day provide quality real time traffic data for all roadways. If you have a Google Maps installed on a mobile phone with GPS capabilities enabled, your location can be transmitted to Google in real time, allowing them to determine the fact that you are on a particular road and traveling at a certain pace. When Google combines your speed with the speed of other phones on the road, across thousands of phones moving around a city at any given time, they can get a pretty good picture of live traffic conditions. Google continuously combines this data and sends it back to you for free in the Google Maps traffic layers. In this way, Google can now offer traffic reports for secondary roadways, routes not necessarily containing DOT sensors.

We now have a list of all the places where Google shows live traffic information. Check out this awesome map from Google, here. You can read more and see the Google’s traffic layer in action here. If you have read so far, I am sure you would also like to know more about the Google Bicycle routes layer.

Labels:

Comments

  1. UnknownJune 14, 2011 at 11:54 AM

    Yes, this is what is expected. I have been testing google traffic for some time now in Italy. It *often* gives an indication of the traffic conditions in near real-time. However sometimes it gets it awfully wrong. I am very curious about where this incorrect info comes from. Also there is no data for most of the roads in Italy, and the data is available for small sections of road here and there in the road network. I am very curious about why data is unavailable for most of the roads and only available in this patchy form.
    George Mu'ammar @GeoMmm

    ReplyDelete
    Replies
    1. Shreerang PatwardhanMarch 10, 2012 at 12:01 AM

      Hi George.

      The traffic data is not widely available in many countries and that is because of lack of available resource and lot of legal government permissions and stuff go into the actually mapping for companies.

      Also the contribution from the crowd (crowd-sourcing) is not very good in several countries which also results in poor details on the Google Maps and associated services.

      Hope this answers your query. Please keep posting your feedback. Happy to hear from you.

      Regards,
      Shreerang
      Like us on Facebook at https://www.facebook.com/pages/Spatial-Unlimited/185149371538692

      Delete
  2. StartxLabs TechnologiesFebruary 19, 2012 at 9:32 AM

    Hi,

    Is there any free API for developers which can provide real time traffic speed or calculate time required to travel two points ?

    If there is any other possible way please share me at deep21c@gmail.com

    Thanks,
    Deepchand Singh

    ReplyDelete
    Replies
    1. Shreerang PatwardhanMarch 10, 2012 at 12:00 AM

      Hi Deep.

      Sorry for replying late. As far as the traffic data API goes there are none as far as I know. Please correct me if you have found any.

      For the distance calculation and time required to move from point A to B you can use the Google Distance API.

      Hope this helps. I would be more than happy to answer any more queries.

      Regards,
      Shreerang.
      Like us on Facebook at https://www.facebook.com/pages/Spatial-Unlimited/185149371538692

      Delete
  3. IRMarch 9, 2012 at 12:02 PM

    Hi,
    Thanks for this post. Could you please point to some references from where you got this information? I know several agencies that provide traffic data: PeMS (loop detector data for freeways only), Inrix, DoT, Navteq, etc. Was just wondering which of those sources Google employs.
    Best,
    Ish

    ReplyDelete
    Replies
    1. Shreerang PatwardhanMarch 10, 2012 at 12:00 AM

      Hi Ish.

      I know one source for sure and that is Inrix for traffic data. Inrix currently offers data for around 22 countries across North America and Europe. Inrix’s other partners include Audi AG, ADAC, ALK, ANWB, Coyote, the Ford Motor Company, I-95 Coalition, MapQuest, Microsoft, NAVIGON, Tele Atlas, Telmap, TeleNav, Texas Transportation Institute and Toyota.

      Hope this helps.

      Regards,
      Shreerang
      Like us on Facebook at https://www.facebook.com/pages/Spatial-Unlimited/185149371538692

      Delete
  4. AnonymousMarch 19, 2012 at 4:17 PM

    Is there an API we can use (or a KML Network feed) that would plot the green/yellow/red traffic conditions? Or is there an RSS/Atom feed that would provide the data (which we could then transform into a KML feed for map plotting)?

    essentially I'm looking for sources (free is best) that would give the data in a machine-readable format to consume and either produce KML or consume KML and plot to a google map.

    Thoughts? Thank you Shreerang!

    ReplyDelete
    Replies
    1. Shreerang PatwardhanMarch 25, 2012 at 10:00 AM

      Hi...I don't think there would be any such data that would be freely available. Having said so, I will check if I find any. If you find any, please post it here!

      Regards,
      Shreerang
      Like us on Facebook at https://www.facebook.com/pages/Spatial-Unlimited/185149371538692

      Delete
  5. omidApril 9, 2012 at 1:38 PM

    Hi is there any way, someone have access to Google real-time traffic data. I'm working on my Master Theses, comparing City traffic data with google. Would you please help me. My email is OMIDMCSE@HOTMAIL.COM thank you

    ReplyDelete
  6. AnonymousApril 18, 2012 at 11:48 AM

    This is false information .

    Check out this link if you want to really know how Google obtains its data.

    http://googleblog.blogspot.ca/2009/08/bright-side-of-sitting-in-traffic.html

    ReplyDelete
  7. AnonymousJuly 13, 2012 at 3:38 AM

    This isnt false Wth are you talking about? Google's article backs up exactly what was said here. Either back up your statements or stop making arrogant comments. You aren't helping anyone.

    ReplyDelete
  8. byronOctober 17, 2012 at 9:51 AM

    what they hell is that download the plugin screen crawl you're putting up?

    ReplyDelete
  9. THE SMALL BUSINESS NETOWRKMarch 30, 2020 at 1:48 AM

    I’m excited to uncover this page. I need to to thank you for ones time for this particularly fantastic read !! I definitely really liked every part of it and i also have you saved to fav to look at new information in your site. traffic exchange

    ReplyDelete
  10. THE SMALL BUSINESS NETOWRKMarch 30, 2020 at 1:48 AM

    I’m excited to uncover this page. I need to to thank you for ones time for this particularly fantastic read !! I definitely really liked every part of it and i also have you saved to fav to look at new information in your site. traffic exchange

    ReplyDelete
  11. AnonymousDecember 19, 2023 at 9:07 AM

    The Google Maps Platform server rejected your request. You must use an API key to authenticate each request to Google Maps Platform APIs. For additional information, please refer to http://g.co/dev/maps-no-account

    ReplyDelete

Post a Comment

Please leave your comments here...

Recommended for You

Where does Google have live traffic information?

Where does Google have live traffic information.md Where all can I see the real-time traffic data? This question has been asked a several hundred times by several hundred people on several hundred forums. Probably you too have had this question. Well, we now have an answer to it and a very good one. Click on the image below and you would be redirected to a map from Google which will show you all the places at which live traffic data is available. Hope you’ll enjoy this and quench your thirst to know more about the Google Real Time traffic data. Update 10/31/2017 Previously the availability of traffic would be shown as seen in the image below, but now you need to be at a minimum of zoom level 5 and centered on the location of your choice to see where traffic data would be avialble. If haven’t already read from where Google gets it’s traffic data, be sure to check out this earlier post. Do post any question you have about the Google Maps, and I will try and answer as many as I can. Fo...
Post a Comment
Read more

The Bicycling Layer...

    Recreational cyclists and bike commuters alike can plot cycle-friendly routes, find trails, and avoid snarling traffic with Google Map's Bicycle layer. Map's bike-friendly, green-toned map layer is very eye-pleasing. The Google Maps API allows you to add bicycle information to your maps using the BicyclingLayer object.     The BicyclingLayer renders a layer of bike paths, suggested bike routes and other overlays specific to bicycling usage on top of the given map. Additionally, the layer alters the style of the base map itself to emphasize streets supporting bicycle routes and de-emphasize streets inappropriate for bicycles.     Let us have a look at the following example. The code has a map which is centered at Pune, India. There are very few cycle tracks in Pune and so you will see just a few dark green lines on the map. But if you would change the latitude-longitude values in the code and center the map at USA, then you will see a...
Post a Comment
Read more

Google Map's Real-Time Traffic Layer...

    You can now check the traffic condition on the road before you leave for work, or a party or to your friend's place. Google's Traffic layer shows the traffic conditions in your area - LIVE!!! Live traffic data is available in major cities in the United States, France, Britain, Canada and Australia, with new cities and countries frequently added. The Google Maps API allows you to add real-time traffic information (where supported) to your maps using the TrafficLayer object. Traffic information is provided for the time at which the request is made. Consult this spreadsheet to determine traffic coverage support.     Let us now have a look at the Google Maps API - Trafiic Layer example. Copy the following code in a simple text file and save it as html. Click on this html file and it will open in your default browser. You will then see the traffic conditions in your area - LIVE...     The output of the above code looks as seen in the r...
4 comments
Read more

Material UI, Google Polymer & Web Components

    Google introduced Material UI during the Google I/O a few days back. Since then the web is all abuzz with articles about material UI and what Polymer is and how these 2 fit together. In this article today, I will try and helps us all to get a better understanding of these new concepts.     So, let's start with Material UI first. Google has for long been trying to bridge the gap between the Web and the Android worlds with a unified user interface and Google's Material UI is a big step towards this. The new design philosophy is about dynamically adjusting the elements according to screen size, add more white space between elements, provide a lot of user feedback using animations, make use of bold UI colors and be flat and 3D about the design at the same time. Now that sounds really cool, isn't it? Well, actually it is and you will actually appreciate and enjoy it all the more when you watch the following video from this year's Google I/O.   ...
Post a Comment
Read more

Panoramio Layer...

    Let's start with the obvious question first...What is Panoramio? Panoramio is a geolocation-oriented photo sharing website. Panoramio website was officially launched on October 3, 2005 by Joaquín Cuenca Abela and Eduardo Manchón Aguilar, two Spanish entrepreneurs and was acquired by Google in July 2007.     Accepted photos uploaded to the site can be accessed as a layer in Google Maps, with new photos being added at the end of every month. The site's goal is to allow Google Maps and Google Earth users to learn more about a given area by viewing the photos that other users have taken at that place. The website is available in several languages and can be viewed here .     You may add photos from Panoramio as a layer to your maps using the PanoramioLayer object. The PanoramioLayer renders a layer of geotagged photo icons from Panoramio on the map as a series of large and small photo icons. Let us now have a look at the following code t...
2 comments
Read more