Final answer:
The 'No passing sign' indicates that drivers should not cross yellow lines due to visibility issues and is used to prevent unsafe overtaking on the road.
Step-by-step explanation:
The sign that indicates 'Do not cross yellow lines' and 'Due to inability to safely see road ahead, may not pass another vehicle' is the No passing sign. This sign is used to prevent accidents and ensure drivers understand that overtaking other vehicles is prohibited at certain stretches of road, due to potential hazards such as limited visibility or oncoming traffic.
Traffic signs play a critical role in road safety, warning drivers of potential hazards and regulating traffic flow to reduce the likelihood of accidents. Understanding these signs and adhering to their instructions is essential for the safety of all road users, including drivers and pedestrians.