Why would my car stall out while idling in traffic?

I am having the same problem and under 54,000 miles, get my oil changed regularly. Last oil change replaced air filter. Problem is getting worse and the research I have done shows recall for shaft sensors every year prior to 2010. Maybe they're hoping I pay and sell before recall and give my money back . 3-16-17 I had my censors tested at Auto Zone and scanned good,brought my car to Nissan dealer and evaluation was crank position sensor and air flow sensor. Replacement quotes of $192.38 for the crank and $284.45 for mass air flow sensor NOT including labor. So I am looking at a $600 bill for sensors and my car has under 54,000 miles/less than 7 years old as I bought in August.