What is essential to do before executing a left turn on a four-lane highway?

• A. Check mirrors only
• B. Check the side street or road
• C. Always signal before stopping
• D. Ensure your driving is uninterrupted

Answer: (B)

Before executing a left turn on a four-lane highway, it is essential to check the side street or road. This action allows the driver to assess the traffic conditions in both directions, especially from vehicles that may be approaching from the left. Ensuring that the lane is clear of pedestrians, cyclists, and other vehicles is crucial for safety when making a turn.

By checking the side street or road, drivers can also identify any potential hazards or obstacles that might not be visible in their mirrors, contributing to a safer maneuver. Additionally, it ensures that any vehicles that may want to turn into the main road from the side street are taken into account, preventing potential accidents. Proper situational awareness is key in traffic management and safe driving practices.