The use of a cellphone, fatigue and high blood pressure are factors that could increase a truck driver’s chance of being involved in an accident, according to new research. Long-haul trucking is among one of the most dangerous jobs in Pennsylvania, as well as in the rest of the country, as each year truck drivers are involved in around 250,000 truck accidents, according to the researchers who conducted the study. Of these accidents, between 1 and 2 percent resulted in death.