A 3-minute lesson from the Kansas course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.
Everything you do with the wheel and pedals depends on what you see and notice. Poor vision, hearing loss or tiredness can creep up without you realizing it, so know the standards and the warning signs.
20/40
Kansas vision standard: at least this in at least one eye, with or without corrective lenses
If lenses are needed to meet the standard, your license is restricted to 'corrective lenses,' and it is illegal to move a vehicle without wearing them.
Hearing helps too: horns, sirens and screeching tires warn of danger, and changes in tire hum or engine sound signal problems. Hearing loss can come on so slowly you don't notice.
Physical or mental tiredness caused by physical or mental strain, repetitive tasks, illness or lack of sleep. Like alcohol and drugs, it impairs vision and judgment.
Two hours into a night drive you keep cracking the window to stay awake. That's a fatigue warning sign. Pull off at the next exit or rest area and take a 15 to 20-minute nap in a safe parking area.
Check your understanding
Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.
If you can meet the 20/40 vision standard only with glasses or contacts, what happens to your Kansas license?
You may drive only in daylight
It is restricted to corrective lenses
You must retest your vision every year
You cannot be licensed until age 18
Answer: It is restricted to corrective lenses
If corrective lenses are needed to meet the standard, the license is restricted to "corrective lenses" and you must wear them while driving.