Where is it illegal to park your vehicle?

Parking regulations are established to ensure safety and accessibility for all road users. It is illegal to park your vehicle in designated handicap spaces without the appropriate permit because these spaces are reserved for individuals with mobility impairments who require closer access to buildings and amenities.

Additionally, parking in front of fire hydrants is prohibited to ensure that emergency services can access water quickly in case of a fire. This is crucial for public safety, as obstruction can delay emergency response efforts. Parking on sidewalks is also illegal because it obstructs pedestrian access and safety, making it difficult for those walking, particularly those with disabilities or pushing strollers.

The other options suggest incorrect scenarios. While there are regulations regarding parking on public streets, it is not blanket illegal to park there; rather, it depends on specific circumstances and signage. Similarly, parking is not restricted solely to residential areas, and while posted signs do dictate where parking is permitted or prohibited, the statement is too broad; not every area with a sign prohibits parking. Thus, the correct answer underscores the specific illegalities associated with important accessibility and safety considerations.