Guest Post: Analysis of Road Accidents in Hyderabad

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An Analysis of Road Accidents in Hyderabad, India

The data taken for this study is obtained from the official website of Hyderabad Traffic Police (http://www.htp.gov.in/Default.htm). Also note that the data for 2014 covers only the period until April.

Reviewing the time series plot I obtained using Minitab Statistical Software indicates that the number of accidents steadily decreased every year from 2011-2013, but there seems to be a rise from January-April 2014.

As I was brought up in city of Hyderabad, my experience has been that the following factors influence road accidents here:

  • Increasing vehicle population leading to heavy traffic during peak hours
  • Drunken driving
  • Speed limit violation
  • Lack of properly laid roads
  • Violation of traffic and safety rules
  • Roads getting water logged during rainy season
  • Using cell phone while driving
  • Not wearing seat belts
  • Unwanted hurrying/negligence of the driver
  • Inattention while backing the vehicle
  • Not getting clear picture of surroundings—lack of signage
  • Using high beam light
  • Driving without a helmet
  • Speed driving on the flyovers and the Outer Ring Road
  • Tripping of heavy load vehicles in the city during the day time

Following is a time series plot of the 852 accidents that took place from January-April 2014 according to the days of the week. This graph clearly indicates that the number of accidents occurring over the weekends is high.

The increase in the number of accidents over the weekend is a serious concern which requires attention since these accidents may be preventable by awareness campaigns targeted to the youth of the city.


Based on the results of the above analysis, preventive actions that I believe could be taken by the concerned authorities are:

  1. Make citizens aware of the importance of strictly adhering to the traffic rules, and impose fines on those who do not abide by them.
  2. Issue driving licenses only as per age limits, and only after the person clears all the tests.
  3. Inspect vehicles to make sure they are road-worthy.
  4. Increase the number of traffic police in areas of heavy traffic.
  5. Make sure the timers installed at traffic signals function properly.
  6. Analyze the major accident-prone areas scientifically to reduce the rate of occurrence.
  7. Check medians, footpaths, and curvatures carefully.
  8. Use paint to clearly mark humps on the roads.
  9. Remove attention-seeking boards, banners, and advertisements.

Dhatry Yaso Kala
Independent Consultant and Lean Six Sigma Black Belt
Hyderabad, India


Name: John Borneman • Friday, June 13, 2014

Is the number of accidents larger on weekends due to more cars on the road during weekends? Would a look at number of accidents per mile driven (or cars on the road) be interesting? Of course, the ultimate goal is to reduce total accidents not the average number of accidents so I do agree that concentrating on traffic patterns on the weekends is the first place to look.

Name: Dhatry • Friday, June 20, 2014

Hello Mr. John, Thanks for your valuable insight. It is during the weekends that many go out in their own vehicles, as during the weekdays they take office buses/cabs. And mostly during the weekends it is the drunken driving/speed driving which leads to more number of accidents. I have requested the traffic department to provide data on the number of cars and 2 wheelers on the road, and am awaiting a response.


Name: Jasmine • Friday, June 27, 2014

Great to see a Hyderabad story on the minitab blog!

Name: Dhatry • Monday, June 30, 2014

Hi Jasmine,

Thanks for your kind comment, I guess you must be a Hyderabadi too!


Name: Şafak Tan Özkan • Wednesday, August 27, 2014

Factors define for the reason of a rise from January-April 2014, seems to be common causes. Steady decrease in the accidents followed by a increase is an indication of special cause. better to check the I Chart and try to hunt down the spceial cause and treat it first..

Good work, Thanks for sharing..

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