Complex sentence: Several proposals have been made to split 310 at Imperial Highway, a major east-west thoroughfare that marks the southern boundary of Los Angeles International Airport; the South Bay, below the boundary, would receive area code 424.
Split into simpler sentences: Several proposals have been made to split 310 at Imperial Highway, a major east-west thoroughfare that marks the southern boundary of Los Angeles International Airport. The South Bay, below the boundary, would receive area code 424.