Final answer:
Expert drivers scan the driving scene at least 12 to 15 seconds ahead in urban areas and 15 to 20 seconds on highways, to ensure they can anticipate and react to any potential driving hazards in a timely manner.
Step-by-step explanation:
Expert drivers aim to scan the entire driving scene at least 12 to 15 seconds ahead in urban driving, which can mean a distance of about 1 to 1 and a half blocks.
On the highway, this time frame increases to about a quarter mile or more, which can be approximately 15 to 20 seconds ahead, depending on speed and conditions. Continuously scanning further ahead allows drivers to anticipate problems before they arise and adjust their driving accordingly.
Remember, this is a general guideline and actual conditions such as weather, traffic, and visibility can dictate the necessity for greater scanning distances and times.
Expert drivers try to scan the entire driving scene at least 10-15 seconds ahead.
By scanning the road ahead, drivers are able to anticipate potential hazards, make informed decisions, and react in a timely manner.
For example, if a driver sees a pedestrian crossing the street 10 seconds ahead, they can start slowing down in advance to avoid any potential collision.