The action was carried out at 8.30 a.m. in the four central districts of Kottayam, Idukki, Alappuzha and Kochi following complaints of improper conduct, said an official.
Inspector General of Police P. Vijayan told the media that the surprise inspection was based on intelligence reports about the way certain school bus drivers misbehaved with the children after being drunk.
“This prompted us to carry out the inspection on school buses,” he said.
Applauding the police action, road safety expert Upendra Narayanan said: “The need of the hour is strict action as prescribed by the law.
“The safety of our children can`t be trifled. Those who are irresponsible should not be employed,” he said.