By posting your message you're leaving yourself wide open to criticism but I won't be abusive as some of the answers will be.
Firstly, lets analyse the situation. You were driving with impaired vision ie. a dirty windscreen, the washer and windscreen wipers were inaffective and you increased your speed beyond the limits of your vision. Would you have driven as fast if it had been thick fog ?.
To write off your car and suffer minor injuries seems to suggest that you were driving too close to the vehicle infront.
It is these factors that have resulted in a charge of careless driving.
Lastly and probably most important, your father must shoulder some of the blame as you were driving under his supervision. I hope he hasn't been teaching you to drive as he seems incapable of providing adequate instruction by allowing you to get into this situation in the first place.



