Gas rationing is a limit on how much fuel a household can buy, set by government order or forced by stations that run dry. When you know how limits have worked and how many gallons your week needs, you can keep getting to work, school and the grocery store on less fuel.
If you drive to work, fuel sits under almost every part of your routine. The Iran war and attacks on tanker traffic in the Strait of Hormuz have put fuel supply back on the minds of American households. Fuel planning is a core preparedness skill that protects you and your family. It fits into an ordinary weekend and pays off every week, shortage or no shortage.
Start by writing down every trip you took last week and roughly how far each one was. That short list becomes the base for your whole fuel plan.
How Gas Rationing Has Worked
Gas rationing has come to the United States twice in living memory, first as a wartime sticker system and later as odd-even buying days. Knowing both shows you the shapes a limit can take, so you can plan for each one. After the history come the forces that could set limits today.
Stickers on the Windshield
The War Production Board ordered gas rationing in 17 eastern states starting May 15, 1942. The Office of Price Administration extended it nationwide on December 1, 1942. According to the National WWII Museum, the main goal was saving rubber. Japan had seized most of the world's natural rubber supply, and less driving meant fewer worn-out tires.
Each car got a ration book and a letter sticker for the windshield. The letter told the station attendant how much fuel the driver could buy.
- A sticker. Most drivers got an A sticker, which allowed about 3 to 4 gallons per week.
- B sticker. Workers whose jobs supported the war effort got extra fuel based on their commute.
- C sticker. Doctors, ministers, mail carriers and railroad workers got the larger allowance their work required.
Trucks carried a T sticker. A national Victory Speed limit of 35 miles per hour stretched every gallon further. Rationing ended on August 15, 1945, the day after Japan announced its surrender.
Odd Days, Even Days
The next shortage came from overseas oil decisions. On October 17, 1973, Arab oil producers cut exports to the United States, and within weeks gas lines, rationing and price shocks reshaped daily life. Oregon and several other states answered with odd-even buying plans that winter. The federal government also printed billions of standby ration coupons in 1974, which were never issued.
The Iranian Revolution cut oil supply again in 1979. California began odd-even rationing on May 9, 1979, and about a dozen states adopted similar rules that year. Drivers whose license plates ended in an odd number bought gas on odd-numbered dates. Even plates bought on even dates. Some plans added a minimum purchase or limited sales to cars with tanks below a set level.
What the History Shows
Both systems limited how you buy fuel. The 1942 plan capped your gallons. The 1979 plans capped your days. In both eras, a household that knew its weekly gallons and kept a fuller tank had an easier time.
What Could Trigger Gas Rationing Today
Knowing the triggers lets you read fuel news calmly and act early. You get the difference between official limits and station limits, plus the tools federal and state officials use. Then comes the practical part: planning your own miles.
Formal Rationing and Station Limits
We define formal gas rationing as a government order with legal force. It sets who can buy, when, or how much, the way the 1942 stickers and 1979 odd-even days did. Informal limits come from the stations themselves. During a shortage, a station may post a cap such as $20 or 10 gallons per customer, or bag its pumps when the tanks run empty. Informal limits are far more common, and they can arrive within a day or two of a supply problem.
Supply Shocks Overseas
The Strait of Hormuz is the narrow channel between Iran and Oman that links the Persian Gulf to the open ocean. The U.S. Energy Information Administration reports that about one fifth of the world's oil consumption passes through it. Attacks on shipping there can raise prices worldwide, even for a country that produces much of its own oil. Higher prices usually show up at the pump well before any shortage does.
Refinery and Pipeline Outages
Local shortages often start closer to home. In May 2021, a ransomware attack shut down the Colonial Pipeline, which carries fuel up the East Coast. Within days, news reports showed many stations across the Southeast running dry. Hurricanes that hit Gulf Coast refineries can cause similar gaps. These events are usually regional and short, lasting days to a few weeks.
Emergency Powers and State Actions
The federal government holds a backstop. Congress created the Strategic Petroleum Reserve in 1975, after the embargo. The U.S. Department of Energy stores the crude oil in underground salt caverns along the Gulf Coast in Texas and Louisiana. The president can order a release during a severe supply disruption. In 2022, the Department of Energy announced a sale of 180 million barrels, the largest in the reserve's history.
States act faster and closer to the pump. Governors can declare energy emergencies, ease work-hour rules for fuel truck drivers and enforce price gouging laws. They can also order odd-even buying. After Hurricane Sandy, New Jersey Governor Chris Christie ordered odd-even gas sales in 12 counties starting November 3, 2012. New York City followed days later under Mayor Michael Bloomberg. Follow your state energy office and emergency management agency to hear about these orders first. The same habits that help you prepare for a gas shortage cover every one of these triggers.
Plan Your Miles
Planning your miles turns a vague worry into a number you can work with. You get your weekly gallons, a plan that fits where you live and simple ways to burn less fuel. After that, the last step is storing a little fuel safely.
Total Your Weekly Gallons
Take the trip list you started earlier. Mark each trip as essential or flexible. Essential trips include work, school, childcare, groceries, the pharmacy and medical visits. Write the round-trip miles for each one and how many times a week you make it. Multiply, then add everything up to get your weekly miles.
Next, divide weekly miles by your car's real miles per gallon. Find that number by dividing the miles you drove by the gallons you bought at your last fill-up. Say your commute is 18 miles each way, five days a week. That is 180 miles. Add 30 miles for groceries and errands and you reach 210 miles. At 25 miles per gallon, your week needs about 8.4 gallons. Now you have a target to plan around.
If You Live Near Transit
An urban household with buses or trains holds the strongest hand. Ride your route once this month so you know the stops, the timing and the fare. Load a transit card and keep it in your wallet. Your car then covers only the trips transit cannot, which can cut your weekly gallons by half or more.
If You Commute From the Suburbs
The suburban commute is usually the biggest number on the list. That same commute is also the easiest to share, because coworkers often drive the same roads at the same hours. Find one or two coworkers who live near you and agree on a carpool plan now. Ask your employer which days could go remote during a fuel emergency. Two remote days in the example above save 72 miles, nearly 3 gallons a week.
If You Live Far From Town
A rural family drives long distances to reach food, fuel and a doctor. That distance has already built a useful habit, because rural households tend to plan one town run that covers many errands. Keep that habit and tighten it. Write a standing list before each trip so one drive replaces two. Talk with neighbors about sharing rides to town during a shortage.
Keep a Fuller Tank
Running the tank low and filling once a week feels efficient, and in normal times it works fine. During a shortage, though, the car with a quarter tank is the one stuck in line. A long drive is the best reason to refill early. Make half a tank your new empty. If a 60-mile round trip to the hospital is part of your life, that half tank keeps it within reach on any day. Under an odd-even gas rationing plan, a half tank also carries you to your next legal buying day. You buy the same fuel, just sooner.
Cut Fuel Use at Home
Cutting fuel use starts before you turn the key. These habits also help you save money on gas in ordinary weeks.
- Stock the pantry. A one week supply of food and household basics replaces several store runs with one planned trip.
- Check tire pressure. Tires filled to the number on the driver's door jamb roll easier and use less fuel.
- Lighten the load. Take out heavy items you carry for no reason and remove empty roof racks to cut drag.
- Chain your errands. Run errands in one loop on the way home from work, while the engine is already warm.
- Drive smoothly. Gentle starts, steady speeds and shutting off the engine while you wait all stretch each gallon.
Store and Stretch Your Fuel
A small, safe fuel reserve gives you a buffer if stations run dry or gas rationing begins. You get the basic storage rules, a rotation habit and a short plan for the first days of a limit. Many preppers keep a few cans for exactly this reason, and a few simple rules keep that reserve safe.
Containers
Store gasoline only in containers made and labeled for gasoline. Fill each one to about 95 percent to leave room for the fuel to expand in heat. Set the can on the ground when you fill it at the pump, which lets static electricity drain away. Close both the cap and the vent tightly before you drive home.
Heat and Sparks
Keep stored gasoline in a detached shed or a garage, away from your living space. Place it well away from water heaters, furnaces, dryers and anything else with a pilot light or spark. Pick a shaded, ventilated spot that stays cool in summer. Gasoline vapor is heavier than air, so it settles low and travels along the floor.
Stale Fuel
Gasoline breaks down with age. Untreated fuel usually stays good for about three to six months. A fuel stabilizer added to fresh gas can stretch that to a year or more, depending on the product. Learning how to store gasoline long term comes down to fresh fuel, a stabilizer and a sealed container.
Stored fuel must be rotated, so tie rotation to a calendar habit. Pick a fixed reminder, such as the weekends you change your clocks and test your smoke alarms. On those days, pour the stored fuel into your car and refill the cans with fresh gas and stabilizer. If you skip the stabilizer, rotate every three months instead. Write the fill date on each can with a marker. A gas can is a patient object, but the fuel inside keeps its own schedule.
Local Rules
Check the limits where you live before you buy a second can. Many local fire codes cap home gasoline storage at around 25 gallons in approved containers. Call your fire marshal's office and ask how many gallons you can keep, where the cans may sit and whether an attached garage counts. If you live under a homeowners association, read the covenants for rules on fuel storage, sheds and generators. If you rent, read your lease and ask your landlord. If your rules allow little or no storage, your fuller tank becomes your reserve, and the half-tank habit does the same job.
When a Limit Starts
Learn the exact rule first, whether it is a gallon cap, a dollar cap or an odd-even day. Check your plate number and mark your buying days on the calendar. Fill up on your day if your tank is at half or below. Switch to your carpool and transit plans the same week. Use stored fuel as a bridge for essential trips, then refill the cans once supply returns. Ten stored gallons cover a little more than one week of the example commute, so treat them as a one week cushion.
