Three people including an elderly woman were killed in separate accidents in Rajbari and Munshiganj.
In Rajbari, the deceased were a motorcyclist and a pillion rider.
The accident that also left another person injured occurred when a truck rammed a motorbike on Dhaka-Khulna highway in Goalanda upazila on Saturday night, police said on Sunday.
The dead are Rony Kha, 32, son of Abdul Jalil Kha of Sadar upazila in Faridpur district and Sumon Talukdar, 35, son of Hasan Talukdar of Shariatpur district.
Tarikul Islam, officer-in-charge of Ahladipur Highway Police Station, said the accident occurred around 10:30 pm when the speedy truck hit the motorbike carrying three people, leaving two dead on the spot and another injured
Injured Swapan, 35, of Faridpur district was taken to a local hospital from where he was shifted to Dhaka for better treatment.
In Munshiganj, the woman believed to be 60 years old died as she was hit by a speedy vehicle while crossing the Dhaka-Chattogram Highway in Gajaria upazila.
Highway police said the woman was rescued by locals, who rushed her to the upazila health complex, where she was declared dead on arrival.
The body was kept there.