It never ceases to amaze me how some threads on GTAM can go ballistic in only a few posts.
I am a truck driver. If I do a proper, recorded pre-trip inspection on my truck and trailer - regardless of whether it's my own company's trailer or from another company - and a wheel assembly later comes off while driving, I am immediately held responsible because I am the driver of the vehicle. The subsequent investigation, and there will be one, may exonerate me and shift the blame onto the last mechanic who serviced the trailer, but the "operating an unsafe vehicle" charge will remain on my commercial driver's licence and my company's safety record. The court battle, and there will be one, will be handled by the insurance companies and, regardless of the outcome, the "operarting an unsafe vehicle" charge will still remain on my commercial driver's licence and my company's safety record. For me to be charged with murder, it would have to be proven that I willingly and knowingly drove a vehicle with a wheel assembly that was not safely secured. In the meantime, the people who were injured/killed as a result of the wheel assembly hitting their vehicle... remain dead.
I can't speak for the rest of commercial licensed drivers in Canada, but I can speak for myself - because I know what the penalties are and have a functioning conscience and strong morals, I do not and will not ever knowingly operate a vehicle if it fails a pre-trip inspection. The potential for a catastrophic outcome far outweighs the dismal compensation I get paid for completing the trip and delivering the load. In other words, the risk is not worth the reward. But if something happens to the vehicle as a result of something that was beyond my control (and a good example is given in another post here about a fractured steering arm), I still end up getting charged for it - that's part and parcel of being a trucker. And that most certainly does not make me a "murderer".