The premier makes the call at the inaugural ceremony of the two-day Livestock Services Week and Exhibition-2024
The crashes were reported from Pahartali and Halishahar on Friday morning, police said.
Lawyer Rafikul Ialam was run over a truck while he was for his morning walk at Halishahar's Block K.
The 70-year-old was declared dead at Chittagong Medical College Hospital, said Assistant Sub-Inspector Md Alauddin of the hospital's police outpost.
Md Ayub Ali Sujon, 26, was severely injured after he was hit by a vehicle at the Saraipara crossing in Pahartali around 3am Friday.
"Locals brought him to the hospital, but he had died by then," said ASI Alauddin.