What is a danger of allowing the rear wheels of a vehicle to cross the center line when making a left turn?

When making a left turn, allowing the rear wheels of a vehicle to cross the center line poses a significant danger as it may lead to losing traction. This occurs because the rear wheels may be forced onto surfaces with different levels of grip or onto an incline, which can destabilize the vehicle. When traction is lost, especially on slippery or uneven surfaces, the vehicle can skid or slide, making controlling the vehicle difficult and increasing the risk of an accident.

Maintaining proper lane discipline during turns is critical for safety. When the rear wheels cross the center line, not only does it affect the vehicle's stability, but it also increases the chance of colliding with oncoming traffic or obstacles. This movement can disrupt the intended path of the vehicle, exacerbating the risk of accidents in busy intersections. Ensuring that the rear wheels stay within the intended lane helps maintain traction and control throughout the maneuver, ultimately enhancing safety for all road users.