The chance of dying in a car accident is only 1 in 100 over my lifetime, so, it might as well be nothing... Well, 115 children in the US are abducted by strangers, sexually assualted and murdered every year. 115 yearly. That isn't an urban myth.
When driving in residential areas you should signal around 30 meters (100 feet) in advance of making a right or left turn. This is assuming there are no other turns on the same side of the road before the turn you intend on taking, else you will need to signal after this turn. For high speed roads this distance increases. 70 mph dual carriageways for instance, signalling should start from around 275 meters (900 feet) from your exit.
if you are driving a vehicle with a Do Not Overtake Turning Vehicle sign and you are within 50 metres of the intersection, you may use either or both lanes if necessary to turn left or right if it is safe to do so (Example 13).