Part 1 can be read here: http://blog.deogps.com/ways-to-analyze-gps-data-part-1/
Part 2 can be read here: http://blog.deogps.com/ways-to-analyze-gps-data-part-2/
5. Vehicle Movement: Although with the help of Google & other service providers, one may receive a fair amount of realistic traffic estimate for Cities which are covered extensively by these services. Another way to understand traffic pattern, specially for locations for which real time traffic data is not available is to observe the movement of your vehicles. It’s notable that in any traffic, unless there is a 100% Road Block, no vehicle would remain static at the same place for a very long period. Example image attached for understanding the vehicle movement:
A few things to notice in this speed chart:
a. Traffic: You would notice that the vehicle doesn’t cross the mark for 20KM/Hr at all between the 35 & 90 mark on the X-axis. That points to a traffic area.
b. Sudden Brakes: There are sudden drops at places, like at the 175 mark on the X-Axis, the vehicle dropped down from 60Km/Hr mark to almost 5Km/hr mark. After that it rose to a speed of 30Km/Hr speed. That signifies a sudden braking due to some reason.
c. Rash Driving: Sudden brakes if are more than often, it shows a rash driving behaviour & the driver requires a coaching in improving their driving style.
It would be wise to note that the speed of any vehicle can’t reach above 20km/hr in any high traffic areas. Whereas on open roads, it’s easy to maintain an average speed nearing or even above 60KM/hr.
Do let us know if there are other data one can interpret to analyze vehicle movements from GPS.