The Metropolitan Transportation Authority reportedly is stepping up its crackdown on bus drivers who break the law.
The Daily News says the agency boosted its surveillance of its drivers after noticing a 10 percent increase in bus accidents from 2012.
Dispatchers posing as passengers are sent onto buses to catch drivers who use cell phones behind the wheel, fail to signal, and run red lights.
The News says the extra surveillance has led to more than 400 violations being given to 371 drivers.
But union officials say some regulations are unreasonable.
As an example, they cite one driver who claims to have had his keys taken away after waving to a fellow driver.
Bus drivers are required to keep both hands on the wheel while the bus is moving.