About Traffico

Traffico is short for Traffic Observer. It monitors bus arrival times to infer traffic conditions.


Hello. My name is Sing Tat. I use bus apps to check bus arrival times. Occasionally, I miss the bus by a few seconds or I end up waiting a couple of minutes more. Curious, I analysed the bus arrival times available at LTA DataMall to look for clues.

You can read the full stories under:

In summary, I found some explanations but interestingly, I also found a way to calculate the estimated time taken by buses to travel between stops. Using these data and adding some algorithms, I am able to build Traffico.

Developers who are keen to determine the speed of traffic along roads should check out LTA’s Traffic Speed Band API. I knew about this API but I still went ahead to build Traffico as an exercise. Just a note that the documentation on this API (User Guide dated 6 Oct 2017) is a little too brief and I have given my feedback to LTA.

Does it work

It’s not perfect but generally yes. It takes a while for the system to react to actual changes on the ground because we are monitoring buses and updates are possible only when buses arrive at stops (usually every 3 to 15 mins).



  • Add another source to your traffic updates and better plan your route


  • Smart Nation Initiatives: Innovative use of existing assets - buses run on predefined routes and periodic schedules so they are ideal 'probes'
  • Urban Planning: Use historical data to identify traffic hotspots and patterns (e.g. congestion on weekend evenings only, unexplained bursts of congestion, etc.)
  • Preemptive Maintenance: Monitor traffic conditions in major and minor roads for anomaly (e.g. faulty traffic light operating sequence)
  • Leverage traffic profile to perform tasks (e.g. tree pruning) more efficiently and effectively


Create a free account to access these features:

  • receive email alerts when traffic conditions change
  • view historical congestion charts

Terms of use

Although we update our security patches regularly, we cannot claim to be impervious to hacks. Do not store anything sensitive on our server. In other words, do not use an email address or a username that uniquely identifies you (i.e. containing NRIC, mobile number, etc.).

We will contact you on important matters (e.g. service disruptions, security issues, etc.) via email if necessary.

Privacy policy

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