Because he hit the brakes doesn't sound like he had a heart attack or anything like that. From what passengers said doesn't sound like mechanical or brake failure either. Hopefully he wasn't texting or talking on the phone. Is it possible that he had sleep apnea and feel asleep at the wheel? We may never know since the driver is dead. Will it be possible to perform an autopsy on the body to rule out heart attack or stroke or some other medical condition? If they are able to do so and rule out those out then what? I don't think sleep apnea will show up in an autopsy??
This begs the question should bus drivers, like truck drivers, be tested for sleep apnea?? They hold the lives of many people in their hands every day. Buses can carry upwards of 55-60 passengers at any given time and double deckers can carry upwards of 80. Many bus drivers are obese, an unfortunate side effect of sitting all day driving, which we know can be a contributing factor in sleep apnea.
It is too soon to say exactly what caused this terrible accident, but even if it turns out that it was caused by mechanical failure or the driver texting or talking on the phone or some other as yet unknown reason,the question of whether or not bus drivers should be tested for sleep apnea is still a valid one and should be given serious consideration. Other tragic accidents like this one could be avoided. Perhaps a trial should be initiated and a certain random percentage of drivers should be tested and based on those results then a determination should be made as to whether or not this is a policy that should be implemented.
Here are some pictures of the accident:











