Under which circumstance is it prohibited to attempt passing a vehicle ahead of you?

It is prohibited to attempt passing a vehicle ahead of you when pavement markings prohibit driving in the other lane because these markings have been specifically designed to enhance safety and regulate traffic flow. When there are solid lines or other markings indicating that it is unsafe to cross into another lane, attempting to pass can result in dangerous situations, including collisions with oncoming traffic or losing control of your vehicle. Understanding and adhering to these markings is crucial for maintaining the safety of all road users.

In contrast, passing near a signal may not be outright prohibited; various conditions may apply, such as visibility and traffic flow. Wet road conditions can reduce traction but do not automatically make passing illegal. Driving under the speed limit does not, in itself, create a dangerous scenario, as other factors must be considered when deciding to pass. Thus, the emphasis on markings highlights their importance in traffic regulations and safety.