Two vegetables traders identified as Shamim, 30, of Comilla and Yamin, 28, of Brahmanbaria, were killed and six others injured in a head-on collision between a bus and pick-up van on Dhaka-Chittagong highway at Baushia Pakhi Point early yesterday. Kamruzzaman Raj, in-charge of Bhaberchar police outpost, said the Comilla-bound vegetables laden pick-up van collided with the bus around 4am, leaving two vegetables traders of the pick-up dead on the spot. The driver was also critically injured in the incident.