How much can breaking a simple rule cost? On Sunday, it cost the life a 9-year-old girl who was run over by a speeding car in Mazgaon. Eyewitnesses said the driver was on the cell phone.

Mixing driving with phone calls — or drinking, for that matter — makes for a lethal cocktail. Common sense should tell them that it is wrong, but it is hardly uncommon to see motorists speeding, drinking and driving or using their cell phones while at the wheel.