Always have emergency change for a telephone call. Know your neighborhood. You might need them in an emergency. If you go out for a late night snack or a midnight movie, take a friend. Don't go alone.
Most assaults happen to a lone victim.
Let someone know where you are going and when you will come back . Call if you're going to be late. If you are driving, park your car in well-lighted places and lock it when you leave. Check for uninvited passengers in the back seat or on the floor before you get back in. Have your keys in hand when approaching your car.