Complex sentence: However, the purpose of the new highway was to replace the congested, winding and hilly route of Highway 8 along the escarpment; several groups of collisions throughout the summer gradually persuaded the public in support of the new highway.
Split into simpler sentences: However, the purpose of the new highway was to replace the congested, winding and hilly route of Highway 8 along the escarpment. Several groups of collisions throughout the summer gradually persuaded the public in support of the new highway.