A 3-minute lesson from the Ohio course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.
Tires are your only contact with the road, and lights are how others see you and read your plans. A two-minute tire check and knowing exactly when lights and signals are required prevent many crashes.
Checking tire inflation:
Keep tires at the manufacturer's recommended pressure (PSI), shown on the door jamb
Check pressure when tires are the same temperature as the surrounding air
Remove the valve stem cap and use a pressure gauge
Too low: inflate to the correct level. Too high: release air from the tire valve
It's 2 p.m. and a light drizzle has you running the wipers. Ohio law requires your headlights on — wipers in use because of precipitation trigger the rule, whatever the time of day.
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.
What is the minimum legal tire tread depth in Ohio?
1/16 inch
1/8 inch
1/32 inch
1/4 inch
Answer: 1/16 inch
Ohio requires a minimum tread depth of 1/16 inch, with no major bumps, bulges, or damage.