A driver suspected of operating his vehicle while drunk early Monday struck two Massachusetts State Police cruisers that were along the side of a Brockton highway for a motor vehicle stop, police said. Police said Frandy Jose Ramirez Rodriguez, 26, of Brockton, was traveling north on Route 27 when his vehicle struck the back of one cruiser and pushed it into the rear of the second cruiser. The impact then pushed the second cruiser into a 2011 Subaru Forester that had been stopped by the troopers, police said. At the time of the crash, the Subaru that had been stopped was in the breakdown lane. Both fully marked cruisers, positioned to protect the Subaru, were in the right lane with their overhead blue emergency lights flashing, police said. The cruisers had two troopers, a field training officer and a new trooper from the MSP recruit class that graduated in June inside. All four troopers were taken by ambulances to Good Samaritan Hospital in Brockton for treatment of non-life-threatening injuries. They were treated and released. Police said Rodriguez was under the influence of alcohol and operating after a previous license suspension. He was arrested and charged with operating under the influence of liquor, operating a motor vehicle after license suspension, negligent operation of a motor vehicle, operating an uninsured motor vehicle, a marked lanes violation and failure to take care in starting, stopping, or turning.