Jadavpur University professor Tuhinadri Sen, who was travelling to Patna airport on a student's bike after a seminar, was killed when a truck hit them from behind.
Sen, 51, a teacher in the pharmaceutical technology department, went to the National Institute of Pharmaceutical Education and Research, Hajipur, to deliver a lecture.
The accident occurred near Gandhi Setu, which connects Hajipur and Patna across the Ganga. Sen was flung into the air and fell some distance away, bleeding profusely from the head. Sen and the student were brought to a hospital in Hajipur, where the professor was declared dead. The student was in a critical condition.
"Sen was travelling in a car to the airport. He got stuck in a snarl for two hours when the student offered him a lift on his two-wheeler," a colleague said.
Sen, who lived in New Alipore, is survived by his wife and two daughters. His wife is a visiting faculty of pharmaceutical technology in several private colleges in south India.