Except for the periods during which parking is entirely prohibited pursuant to § 355.05(b) and except in a period of emergency determined by an officer of the Fire Department or Police Department or in compliance with the directions of a police officer, police sign or traffic-control sign or signal, when any vehicle shall be parked in any parking meter space, the operator of such vehicle shall, upon parking such vehicle in the parking meter space, immediately deposit or cause to be deposited in the parking meter such proper coin or coins in lawful money of the United States as is required by this chapter for such parking meter. Failure to deposit such proper coin or coins shall constitute a violation of this chapter. Upon the deposit of such coin, the parking meter space may be lawfully occupied by such vehicle during the period of time for which coins have been deposited pursuant to the terms of this chapter, but not to exceed the maximum time described in this chapter for such parking space. However, any person parking a vehicle in a parking meter space adjacent to a parking meter which indicates that unused time has been left in the meter by the previous occupant of such space shall not be required to deposit additional coins so long as his or her occupancy of such space does not exceed the indicated unused time. If such vehicle shall remain parked in any such parking meter space after the parking meter time limit determined for such parking meter space has expired, and if the meter shall indicate such illegal parking, then such vehicle shall be considered as parking overtime and beyond the period of legal parking time, and such parking will be deemed a violation of this chapter.