Final answer:
It is unsafe to pass another vehicle when moving through an intersection, when visibility or space is insufficient, when rules prohibit it on certain highways, and when on a one-way street without enough room or legal allowance to pass.
Step-by-step explanation:
When considering safety on the road, it is unsafe to pass the vehicle ahead of you in certain situations. Specifically, it is unsafe to pass:
- When you are moving through an intersection because vehicles often speed through without adhering to the speed limit, and the complexity of movements in intersections increases the risk of accidents.
- When there is a lack of visibility or space to safely maneuver around the vehicle, which can occur on roads that are not straight.
- When there are strict rules or regulations prohibiting passing on certain types of roads, such as some highways.
- When you are on a one-way street and there is not enough space or it is not legal to pass.
In the scenarios provided:
- A woman pushing a baby stroller indicates that there might be pedestrians around, so extra caution is needed.
- Honking at an intersection may distract and stress drivers, making it an inopportune time to pass.
- A dog running into the street can cause an unexpected hazard, signaling that it is not a safe moment for passing maneuvers.
- Calculating whether it's safe to cross a road based on car distances is crucial. For example, at a speed limit of 60 km/hr, knowing that the length of the average car is 3.5 meters helps gauge safe crossing times.