Quick H/P tips:
When your on a motorway, watch for trucks or cars merging into your lane and also merging onto the motorway as these will cause you to sloow down, I don't know many other hazards you'd get on a motorway, unless someone slowed down for some reason, but the first two are usually what you get.
You should get one of these - when in a narrow road (enough for 1-1.5 cars but not two) LOOK AHEAD, I can almost guarantee you a car will come oppersite and you will need to stop, this is more of a reaction (click twice with small space, as it's possibe to click before the 5,4,3,2,1 window opens)
Watch for kids, there is one were they are running and they run to the crossing, but don't cross, they are running as if they are going to run out onto the road <-- t'was the harzard.
Zebras count as harzards too, if someone steps out, it's a click IIRC. Red lights don't.
Cyclists and horse riders too. Oh yeah and look for people reversing or turning around in the road.
Basically if someone causes you to stop or slow down OR change direction it's possible that it's a hazard. Do a mock test of the H/P as without one you may probably fail.
You should click if you think it could be a danger, you wont lose points, although if you click too many times (I think it's something like 7-10 that's considered the cheat zone) you fail that video,
The first part is easy, it's stupid questions like what to do if someone crashes or road signs, most are common sense and since you use these forums I suppose you have some.

- providing you've revised this (THC is good, actually very important for this so are mocks) you should pass.
The H/P is some hit and miss, anyway I hope you pwn it. Seems forever when I did mine, I barely rememeber.