Complex sentence: After passing the Copthall complex, the A1 meets the M1 motorway at Fiveways Corner, whereafter the road narrows, turning sharply north under the name of Watford Way and continues via Mill Hill Circus to Apex Corner.
Split into simpler sentences: After passing the Copthall complex, the A1 meets the M1 motorway at Fiveways Corner. Immediately after passing Fiveways Corner, the A1 turns sharply north under the name of Watford Way and continues via Mill Hill Circus to Apex Corner.