I have traveled this highway many times. It is basically used as a short cut between the california central valley into the san francisco bay area. This is a two lane road with a lot of commuters and can be slow going if a big rig or some other slow moving vehicle is present. This stretch of highway 12 where she died is called Blood Alley and has a lot of tragic deaths through out the year. Wish something could be done to stop all the dying on this road way but cal trans says because of the marsh lands surrounding it there is no way to fix it. This is so sad but will happen again real soon. rip jennifer