Officials issued the criticism during a Tuesday meeting to present findings about the probable cause of the incident.
The buses are equipped with BYD-designed and built iron-phosphate batteries, delivering 324 kWh of power that come with a 12-year warranty, the industry’s longest electric-battery warranty available.
Through a competitive procurement process, the agency executed a contract with MCI in November 2015 to manufacture and deliver up to 1,219 commuter coaches.
The four car train, manufactured by Hitachi Rail Italy, is a key component of the first driverless rail transit system in the U.S.
The agreement gives students the ability to ride all of the transit systems in the area, including KCATA, Johnson County Transit, Unified Government Transit and Independence, Mo., by using their school ID.