Maryland transportation authority decided to setup toll booths on either side of the Fort McHenry tunnel due to increased traffic. After studying the traffic patterns, MTA found that peak traffic occurs in the evenings on Friday and Saturday. On average, 3000 vehicles per hour pass through the tunnel each way during peak times. The vehicles need to go through the toll booths. MTA would like to keep the average time spent at each toll booth to less than 2 minutes. How many lanes should MTA open if they do not want to have more than 10 vehicles waiting in line (on average)?