Final answer:
Turn lanes are designated for turning right or left, helping manage traffic flow, and are not for parking, driving straight, or emergency vehicles only.
Step-by-step explanation:
Turn lanes are lanes specifically designated for turning either to the right or the left. They are not used for parking or driving straight, and they are not reserved for emergency vehicles.
These lanes are often marked by arrows on the pavement indicating the direction of the turn and are placed at strategic points on roads and at intersections to help manage traffic flow and improve safety. Using turn lanes correctly is essential for following traffic regulations and for the prevention of accidents.