I don't knw
Typically, drivers need about 30-45 degrees of direct vision ahead to gather all necessary information while driving. This allows them to see potential hazards, road signs, traffic lights, and other important details for safe navigation.
Direct vision is your central vision. It refers to how and what you see when looking straight at an object. Indirect vision refers to your peripheral vision, which means the things you see "out of the corner of your eye" or off to the side while you are looking directly ahead.
Field of vision refers to the total area in which an individual can see while their eyes are fixed straight ahead. It encompasses both central vision (focused vision) and peripheral vision (side vision). A larger field of vision allows for a wider range of visual information to be perceived.
What lies ahead. Never, never use lay without a direct object.
When it is lawful and safe to do so and you have a clear field of vision ahead.
Varies from person to person but about 180 degrees.
Rock on, dude!
You should scan ahead as far as you can see
Central vision refers to when eyes are focused straight ahead. Peripheral vision refers to vision that occurs outside your central sight of vision. Fringe vision refers to the edge of your peripheral vision.
It depends. In the present tense it is lie ahead. In the past tense it is lay ahead. Because lay is the past tense of lie. Do not confuse this with the verb lay, which means to put something down. I may lay an ambush. But the ambush lies ahead. Now that I am past the ambush it does not bother me that it lay ahead.
backing out- you have considerably less vision
The area that is visible to the patient when they look straight ahead is the central visual field. This is where the focus of their vision lies, allowing them to see objects clearly and in detail.