Haifa is a city in Israel.
Hitching North or East
Get to the "Check-Post" Junction near Lev Hamifratz central station and go to the bus stop in the east of the junction and hitchhike the traffic that is heading east. After you hitchhiked you can continue to the north through Yagur junction through the rural areas.
Hitching South (Tel Aviv, Jerusalem)
Get to the Hof Hacarmel Central Bus Station (very easy to get there by bus, 5.50 shekels). From the CBS you need to get to the beach (through the underground tunnel of the train station), and walk along the beach for a few minutes, until you see the Microsoft building to your left. Then you should climb to the highway, and start hitchhiking.