Savings Calculator How much can the Brake-Boss save your rail yard? Let's find out. To get started just answer the five questions below. These numbers are based upon your rail yard averages. On average, how many trains do you test per week? On average, how many cars on your train? What is your average time in minutes for a successful air-brake test? How many car inspectors do you need to perform an air-brake test? What is the hourly wage of your car inspectors? Calculate Savings