Complex sentence: This method met with criticism after a negligent highway employee failed to close the gate preventing access to the HOV lanes of Interstate 279 in Pittsburgh, Pennsylvania in August 1995, causing a high-speed head-on collision that killed six people.
Split into simpler sentences: This method met with criticism after an August 1995 incident in Pittsburgh, Pennsylvania, in which a negligent highway employee failed to close the gate preventing access to the HOV lanes of Interstate 279. This led to a high-speed head-on collision that killed six people.