Your First Twenty Hours
The fine muscles in your ankles and wrists take time to develop and give your foot and hands accurate enough control to move the car smoothly. Merging both your hands and feet with your eyes so they all work as a unit also takes time to develop and move as one, and smooth.
Add to this controlling the positioning of your car accurately, always in the proper space plus managing the speed of your car, with the flow, and slowing totally down to low low crawls again takes time.
Next Twenty Hours
Lines signs lights overhead signs all must be understood and there are a ton of them. Additionally, there are many laws right of ways, and general rules and bylaws that need to be applied as you move through a wide variety of different road and intersection configurations.
At times this can be overwhelming and certainly confusing, all the while continuing to place and control the car in the precise proper location.
Last Twenty Hours
Then we add in Traffic, other cars and trucks, bikes, motorcycles and pedestrians. The variations of all these moving objects are endless, surprising and often also confusing.
And all the while you must be aware of the signs lines and laws, as well as keep your car in the exact required location and under control.
Total sixty hours is the minimum ICBC recommends you drive before attempting a 7L driving test.
You can download the manual free here.