Officers are required to complete a Vehicle or Pedestrian Investigation Report. The LLF Law Firm explain the process of an arrest, covering both arrests that happen on the scene of a potential crime, and arrests via warrant.(a) Obstruction on front windshield. Enter a brief description of the violation as complete as possible. If more space is needed, continue on the reverse side of the CVN in the space provided. A person commits a misdemeanor of the second degree if he intentionally obstructs, impairs or perverts the administration of law or other governmental function. Call our office in Media, Pennsylvania at 610-565-4747 to arrange an initial consultation with a skilled defense lawyer. The police in Philadelphia can arrest you in your own home, but there are limitations on the power to arrest. Typically, the police need an arrest warrant.