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Most people during "normal" times fill their car when it is about 1/4 of less full, during the 1973 and 1979 oil crisis these same people would fill their tanks when the tanks were still 3/4 full, they wanted to make sure they had gas when they needed it.
From what I have read this is normal and the main reason the US impose gas rationing during WWII, Not to cur down usage, but to prevent people from keeping their tanks filled up instead of leaving the tank empty out as in normal times (Gas rationing was imposed for other reasons, for example the US wanted to keep the price of oil low for the US Government was buying a lot of it to fight the war, but the need to give people assurance that they will have gasoline when they need it was an important factor).
As to why it is hitting the Southeast NOT rest of the country, is that the problem is NOT the refineries but oil through the Texas to New Jersey oil pipeline. The Pipeline had been built during WWII so we could ship oil to the North east and avoid the German U-Boats. After WWII the Southeast expanded and came to depend on that pipeline for its oil. The Mississippi/Ohio/ Missouri River system depend on Barges for its oil shipments (Going as far east as Pittsburgh). The West Coast relies on its own oil shipments. The American West relies on its own pipelines and/or rail shipments. The Northeast imports it oil from overseas (with most of its refineries in New Jersey). The Upper Mid West, when it is not importing oil from New Orleans via barges, is importing oil from Alberta Canada via pipeline. That leaves only the Southeast dependent on that old WWII era pipeline. The pipeline while designed to ship oil to New Jersey, is primary used to ship oil to the Southeast. The only other way to get oil into the area is by truck (The Railroads do not have enough tankers to haul the oil and even the trucks are limited). Because the pipeline supplies enough oil for 60 years no one in the Southeast ever thought up about having local supplies, and with just in time inventory becoming the rage in the 1980s, no one even thought of it when supplies and demand equaled out.
Thus you have a system in place that depended on the pipeline suppling the gasoline/oil needed but no storage of such oil. In my area (Pittsburgh and Western Pa), which is supplied by barges a big fear is the water way closed down for 0ne to two weeks (Which has happened) so the terminals of the Barges have large storage tanks for oil to keep on hand two to three weeks of supply if are cut off. Furthermore since we use barges, we can delay the barges for the blockage then bring them AND additional barges in to supply us fuel. Both of these features build in a safety net of additional fuel that can be provided within about a week of any shut down of the River. In the US Southeast no such safety nets exists. Furthermore given the efficiency of the pipeline no secondary system such as Train tankers and truck tankers exist to haul in fuel from other areas. Some trucks do exist but the driver has to give up his regular run to run to a distribution center NOT on the pipeline to get fuel and haul it back to the Southeast. Some of this is happening, but that means other drivers have to take over that driver's route which further slows down shipments to the gas stations.
Remember the problem is the pipeline had to be closed down for Gustav. When Gustav hit parts of the pipeline was exposed, which shut it down till the pipeline was recovered with dirt and tested for leaks (pipe designed for underground use depend on the ground to hold the pipe in place, without ground around the pipe, it can break and leak, thus the need to cover the pipeline over and to test it for leaks BEFORE oil and/or gasoline can be shipped through it). This is what caused the problem, Gustav exposed the pipeline, which meant the pipeline had to be shit down and recovered and tested. That took time, and during that time whatever supplies that existed in the Southeast was used up. At that point Ike appeared and shut down the refineries, which meant nothing could be shipped through the pipeline. Again the pipeline had to be checked (at least it did not have to be recovered). This added another week to the lack of oil being shipped, and whatever oil that had gone through was used up as soon as it hit the distribution points do to the fact the inventory had already been used up during the wait for the pipeline to open up.
Thus the problem is the just in time inventory system that the pipeline encouraged. The pipeline unable to deliver oil for three weeks (Two weeks do to Gustav, one week do to Ike, Gustav do to potential damage to the pipeline, Ike do to the refineries being shut down so they was no gasoline to ship through the pipeline). The southeast did NOT have three weeks of inventory of gasoline, thus a shortage occurred. The solution is the pipeline suppling the gasoline (And it is) but that will take time for the pipeline has to supply three weeks of supply (Four weeks if you include the week the oil is shipped). This will take time. I do not think the pipeline can supply more then two weeks of supply at a time (and I have my doubts even at that level). This problem will be resolved over the next few weeks as gasoline supplies are pumped through the pipeline and gas stations get what their normally get in supplies. Once that is achieved then inventory will be built up. It will take time, exactly how long would depend on how much gasoline is used in the Southeast AND how much oil can be shipped through the pipeline (And whatever other shipments can be made to the Southeast). I suspect the problem will last only a couple of more weeks, but the Southeast is probably the most car depended area of the US, the alternatives to Gasoline and cars are limited (If they exists at all). You do not have the Subway system of the large cities (New York etc), and most of the major Cities (Atlanta, Charleston etc) do NOT have the mass transit system of Northern Cities. The distances people have to travel are to far for most bicyclist (Where bicycling is possible given the tendency in that part of the South to go to fast in their cars). The best solution would be a cut back in Gasoline demand, but I can NOT see how that can be done given how depended the area is on cars and gasoline.
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