00510nam a2200133Ia 4500 20260716044051.0 Serial Bhargava, Saurabh Driving under the (cellular) influence 2013 Investigates the causal link between driver cell phone use and crash rates by exploiting a natural experiment induced by the change in cellular plans - a discontinuity in the marginal price of a phone call at 9pm on weekdays. 10/7/13 SANDRAW A 59810 59810