Final answer:
When driving past parked vehicles on the left, it is best to maintain a space of at least 2 meters or 4 meters from your vehicle's left side to ensure safety.
Step-by-step explanation:
When driving past vehicles parked on the left, it is best to have a space of at least 2 meters or 4 meters from the left side of your vehicle. This ensures that you have enough clearance to avoid any potential collisions with the parked vehicles.