"It appears that the taxi could not stop at the robot and collided with a bakkie that had stopped there."

'We suspect that the brakes were not operational'
He said three adults and a boy, about seven years old, had died instantly and 16 people had been injured.

All were passengers in the taxi, which had been overloaded. Two people travelling in the bakkie had been slightly injured.

http://www.int.iol.co.za/index.php?set_id=1&click_id=181&art_id=vn20060929081100268C726367