The statement "Space to the side of the vehicle is harder to control than the space in front" is false.
Drivers have a better view of the space in front of them than they do of the space to the sides. This is due to the fact that drivers have a windshield and mirrors that provide them with a clear view of the road ahead and behind them.
However, there are no mirrors or other devices that provide drivers with a clear view of the space to the sides of their vehicles. As a result, drivers must rely on their head checks and peripheral vision to see what is happening to the sides of their vehicles. This makes it more difficult for drivers to control the space to the sides of their vehicles than the space in front.