It is illegal to park a car in front of a fire hydrant.
?Depends It is not illegal in California, forexample.
Yes, it is illegal to park in a compact spot if your vehicle does not meet the size requirements specified for that spot.
Legally - at all times the vehicle is used on public roads. Practically - when you want to park on an incline.
When parking on slippery roads, make sure to park on a level surface and engage the parking brake. Avoid parking on icy patches or hills. If necessary, use wheel chocks to prevent the vehicle from slipping.
Just about any open area, such as a park, and never on a track or roads for the entire time.
Yes, it is illegal to park a car with expired tags.
No, it is illegal to park on the sidewalk in your driveway.
The best place for a nature walk is some where, where there are no busy roads or no roads at all like in the hills or in a park or maybe on a country road with no cars but by some feild, to see snakes, jack rabbits, etc.
Yes it is in most jusrisdictions, and in many the vehicle has to be in park or out of gear with the parking brake applied. All in all, it's simply not safe, and general common sense would dictate stopping to allow passengers to exit the vehicle.
No but it's best to park on a old lady.
Mike Shinoda of Linkin Park =)