Complex sentence: More than 87 motorists and pedestrians have been killed at Blue Line crossings since 1990 and there have been more than 792 accidents, making the the line by multiples the deadliest and most accident-prone rail line in the country.
Split into simpler sentences: More than 87 motorists and pedestrians have been killed at Blue Line crossings since 1990 and there have been more than 792 accidents. The astronomical accident rate make it by multiples the deadliest and most accident-prone rail line in the country.