What are the causes of road accidents? Mobile phones etc or something

Causes are too many but the recent one has been added to the list involving reckless use of mobile phones.I know of quite few accidents which were avoidable and tragically led to loss of lives!

I think Drunken Driving and Mobile phone are the major causes for road accidents..

Carelessness is the main reason of the road accidents.Cell phone isone of the reasons for it.

Violation of traffic rules, negligent and rash driving cause accidents. Use of mobile phone while driving is also a traffic rule violation.