Always be wary of the wizened old man or woman. The clue is in the word wizened. These people are almost certainly witches and wizards and will know or have used more curses than you have had hot dinners. Don't get in their way either (a) generally or (b) when it comes to sky and road use. You will regret it (though whether you would live to regret it is beyond the remit of this Highway Code to confirm or refute).
Always give plenty of braking room whether on the ground or if flying. It is good practice, nobody can accuse you of cutting them up (and you never know what such accusations might lead to as in this world there is plenty of scope for imaginative revenge and you don't want to be on the receiving end).
Just because some old woman is sweeping the porch with her broom and looks totally harmless, that doesn't mean she is so be aware she could take to the skies at speed on that same broom at any moment and you do not want to get in the way as she prepares to take off. Witches don't like that kind of thing and have myriads of ways in showing that dislike, all of which will hurt.
On the opposite end of the scale do watch where you walk. Most dwarves are very conscientious about the locations of their mines and other workings but some are not. And there is always the (usually) young inexperienced dwarf who comes up to the surface at the wrong point. Mole hills can be a hazard but they are nothing compared to an annoyed dwarf who has just been trodden on, which is a foolish thing to do since he/she will have an axe on them and they won't be afraid to use it. The fact they emerged in the wrong place will be lost in their anger at you. Dwarves are phenomenally sensitive about their height so being trodden on simply will not help improve their mood or your likelihood of getting through the rest of the day in one piece. There are road signs at vulnerable points (i.e. where this has happened in the past and could well happen again). Where the fairy government gives alternative routes, take them.
Don't get in the way of any passing unicorn(s). As well as the horn being capable of giving a very nasty injury, the animal is perfectly capable of trampling to death anything and anyone getting in the way. Forget your rights of way in situations like this - focus on safety (yours!).
When the fairy squad indicate you are to pull over, just do so. Nine times out of ten it is so they can pass you on their way to an emergency. Only occasionally will they specifically need to stop you for something. This is usually some sort of traffic infringement or to warn you of incidents in the area that might affect your journey. Under no circumstances should you try to out-fly them. It is not funny, they will beat you hollow and if you fly into the emergency they were on their way to deal with, nobody is going to have any sympathy for the plight you then find yourself in. You will also be booked as not allowing the fairy squad to pass you or to pull over when they tell you to do so is both a civil and a criminal matter. (The squad will assume it is for criminal purposes you don't want to pull over for them and from their viewpoint it is an unreasonable supposition).
Never get in the way of a giant (big and friendly or otherwise) as nothing good will come out of this, especially for you, unless you want your fate to be part of a squashy lump found on the boots of said giant when he finally gets home for the day and kicks his footwear off.
Unless you know you can out-run the wind, do take all sensible precautions when the weather takes a turn for the worse. In stormy conditions, expect to see witches about flying and screeching. Expect the dwarves to be cursing as they get picked up and hurled about by a playful storm force wind. Just don't get in the way here. If you do know you can out-run the wind, be prepared to be interrogated by the Queen’s Council. They will want to know how you inherited that skill.
Also the weather will not be normal by anyone's definition of that word. Storms will always be far worse than on any other world you could name. Items are prone to be picked up by the wind and thrown and blown about for miles. Nor is it unusual for a farmhouse to drop on someone. Witches are particularly vulnerable to this. So don't bother taking an umbrella. It might shield you from the rain but it won't shield you from flying farmhouses and the like. The FNN weatherman does broadcast a daily forecast as to which items are likely to be sent flying that day so you would do well to ensure you always tune in for this. Avoidjng the days when buildings are up in the air is a very good idea.
Watch out for talking lions. They are usually on their way to another world but can pass through here on the way through. Be as polite as possible. Decide to do otherwise and you won’t live to regret it. (On the plus side, it’ll all be over very quickly).
Also beware talking wolves. They may or may not be on their way to Granny’s house but it is definite they are not vegetarian. And anyone prepared to cross-dress to get their next meal will probably stop at little else to get what they want. They certainly won’t be looking out for strange travellers (i.e. you) with your good health and well being as the first thought in their heads.
Those who offer to accompany you should be treated with caution and the more you can find out about them beforehand the better. You can get the cloaked strangers (who usually turn out to be a long lost king who is just beginning a mission that will restore him to his throne) but you can also get the spies who work for whoever the Dark Lord might be. (They always are dark incidentally. I have yet to hear of a light one!). So the sensible thing to do is ask for a guide but who do you ask? How can you check that they are okay? The good news is if you after reading this Code you apply to the Palace for its latest guidelines on this issue, you will get a discount off the RPP. The guidelines are fairly thorough. The bad news is that anything anyone sends in to be put into the guidelines has been taken on face value and it is not unknown for beings to lie. Definitely buyer beware.
What the realm could do with is a kind of Trip Advisor here, though in this world those tending to give bad reviews are unlikely to be published. This is because they have been eaten, turned into something nasty or on the run with the hounds of hell after them so are not going to stick around to give you the advice you need to hear. You are on your own. However, there is one thing that could help you. Make friends with the elves. Show them you are courageous and of good heart. They may help you (it would assist if whoever it is you are trying to get away from is after world domination as it is in the elves’ interests then as well to give you a hand). Oh and a stout, loyal gardener can make an excellent companion so never look down on someone’s background.