Ohio Signs practice

• A.Right turns are prohibited.
• B.Left turns are prohibited.✓
• C.The left lane is closed ahead.
• D.The right lane is closed ahead.

Why: This sign uses the universal prohibitory symbol: a red circle with a diagonal slash. The symbol inside is a left-turn arrow. Therefore, the sign explicitly forbids making a left turn at this location.

• A.to allow vehicles in certain lanes.
• B.to prohibit vehicles from entering a roadway.✓
• C.to prohibit vehicles from making a U-turn.
• D.to prohibit heavy trucks from entering a roadway.

Why: This is a "Do Not Enter" sign, which is a regulatory sign used to prohibit vehicles from entering a specific roadway. According to the driver's manual, these signs regulate the movement of traffic and are commonly used at intersections of one-way roads and freeway exit ramps.