Experimental automobiles in the past have included sensors to record data preceding test crashes. Later after analysis, crash scenarios are analysed and studied to avoid future crashes. With more than 10 million car accidents reported in the India each year, car manufacturers have shifted their focus of a passive approach, e. g. , airbags, seat belts, and antilock brakes, to something more active by adding features associated with advanced driver-assistance systems (ADASs) and collision avoidance systems. But the vehicles consisting these add-ons are extremely expensive. Since, add-ons ultimately add on to the cost of the vehicle it is not very convenient for the user. Therefore to solve this problem we present a Smart Phone application as cell phones are already available in abundance and are also portable. Given its accessibility and portability, the smart phone application can bring a driver to assist any vehicle without regard for on-vehicle communication system requirements. Road quality tends to be variable, with bumpy roads and potholes being common place even in the heart of cities. The application Safe Driving App for Smart Phones detects these bumps and assists the driver for a safe driving. Also, if the driver is not well or if he falls asleep behind the wheel his life may be in danger. Hence an application that can detect patterns like weaving pattern and sudden acceleration and sudden deceleration is developed. That is, basically if the driver is driving at normal speed but suddenly accelerates or decelerates. To assure that the driver is safe, a message is sent along with the current location to the contacts registered by the user. Also, if the driver is perfectly fine he can stop the sending of message by touching the screen in the time window. It is an affordable and smart choice over expensive add-ons.

Weaving bumps Sudden acceleration Sudden deceleration.