Sorry for the loss and pray for quick and complete recovery of the injured.
Experts can comment on this. But I really don't see a frontal impact in this case. In same cases deployment of airbags increase the injury instead of decreasing it.
But this highlights another major problem. For which we the motoring community is silent.
Administration also is blind. We the car users are fined even for minor anomalies. On motor ways now they are insisting to keep first aid kit, emergency triangle, and fire extinguishers in the vehicles. They will probably start enforcing it too. Yesterday I had to explain a motorway police officer that the lights which are continuously ON on my car are DRL's not the high beams. lol.
I am not against all these safety precautions. I travel a lot on these provincial or minor roads too. Nobody in the administration bothers about these dangerously overloaded trolleys. And the are accepted as one's fate like our whole nation has now accepted Coronavirus as a fate. Someday someones death will come but for others it will be business as usual.
I think in this case the OP should present his case the to authorities who allow these killer trolleys on our roads. It is not Indus or Toyota's fault.
I suspect these killer trolleys are more dangerous for their own tractor drivers. These tractor drivers are not even care for their own lives. What respect they would have lives and property of others? Relevant authorities need to take action.