New Jersey will move to an odd-even gas rationing system in 12 counties at noon on Saturday.

Gov. Chris Christie ordered the odd-even system to help ease fuel shortages and extended lines for gasoline that have occurred since a superstorm decimated the coast this week.

Residents with license plates ending in an even number will be able to buy gas on even-numbered days and residents with plates ending in an odd number can make gas purchases on odd-numbered days. If your plate ends with a letter, you will be categorized as having an odd number.

 The following counties are effected by the odd-even gas sales: Bergen, Essex, Hudson, Hunterdon, Middlesex, Morris, Monmouth, Passaic, Somerset, Sussex, Union and Warren.

Christie said Thursday that gas shortages and long lines are happening in the northern part of the state, but not in the southern portion.