As long as the evidence (broken glass, skid marks, etc.) support your son's version, he'll have no problem.
Yes it is not illegall for someone to park right across the street in front of your driveway
It is not an offence to back out of a driveway, but it is an offence to back across a lane of traffic.
The agency with authority over that area can - you cannot.
the pedestrian has the right of way
Talk to your postmaster, the Post Office has exclusive jurisdiction over all issues concerning Mailboxes.
Personally, I think that it should be the fault of the driver going across the aisle, but other may think otherwise.
There may be "right of way" issues that need to be addressed. If the right of way has been maintained for a specific amount of time (determined by state law in YOUR state), you can demand that the right of way be continued. If there is no specific or other right of way and no access to the land, you might want to consider a lawsuit against the person who sold the land.What you have is perhaps an "easement" question. Even if the deed does not say you have a right to pass and repass upon his portion of the driveway, you have an "easement implied in law." In other words, the owner knew about the driveway across his land, sold you the land with the driveway, and thus burdened his own land by giving you a perpetual right to use the driveway across his land. For future reference, you should amend the deed to include the easement, or obtain another signed document that describes the easement and have it recorded in the registry. This will help prevent any future owner from attempting to deny you the use of the driveway and the easement upon the driveway.
Yes. Being illegally parked does not affect fault. If you strike a parked vehicle, it is ALWAYS your fault because you have a duty to ensure the way was clear before moving.
Tank
Yes it can.
No, the local electrical code will tell you how high wires must be over a driveway, and the national standard for a private driveway is 12 feet (NEC 225.18, as required by Art. 725 (Cl.1,2,3 signaling circuits), or 18 feet if truck or farm traffic uses the driveway.
A bridge is another word for an overpass across water.