The driver of any vehicle who first begins driving or maneuvering his vehicle into a vacant parking space shall have a prior right-of-way to park in such place, and it shall be unlawful for another driver to attempt to deprive him thereof by blocking his access or otherwise. For the purpose of establishing right-of-way in this section it shall be considered proper to back into any but a front-in angle parking space. [Ord. 1999-04-020].