Tandem Parking laws - any experience?

[Donald M.]

Is anyone familiar with any laws/cases involving tandem parking? I did a search online and could not find much. I will define it as a parking space in front of a parking space. Both belonging to different owners. In other words, the car in the back space would have to be moved for the front car to exit, and if a car were parked in the back space and the front space was vacant, it would not be accessible unless the back car was moved. 

Could the person with the back space legally refuse to move their car?