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In the 1980's, many
cars still ran on
leaded gasoline, so filling stations offered
leaded and unleaded pumps to give
customers the right fuel for their engine.
In the mid - 1980's, credit card readers were
In 1986, E-Z Serve and
its subsidiary Auto-gas introduce
the first pay-at-the-pump credit card solution, paving the
for 24-hour self-service.
Pay at the pump is a system used at gas (filling)
where customers can pay for their fuel by inserting a
credit or debit card or fuel card into a slot on the pump,
bypassing the requirement to make the transaction with the
attendant or to walk away from your vehicle.
Pay at the pump is seen as a way to keep the
cost of gasoline down by
reducing the need for employees at gas
Be careful when paying
at the pump:
Those who use the pay at the pump feature could be putting
themselves at risk for fraud, as thieves attach skimmers
to the pumps that can steal the information
off the cards used to make purchases.
Many debit cards can be used to make the purchase either as
debit or credit.
But those who make the purchases as debit are potentially
their information into the skimmers.
Without the human interaction, there is no verification
when credit cards are used to make purchases, and
no signature is required.
This enables those in possession of stolen or cloned credit
or those who are otherwise making unauthorized use of
card to purchase gasoline without a signature.
By 1994, only 13 percent of stations had the
but 80 percent of stations used the technology by 2002,
and virtually all U.S. stations do today.
Did you know how a gas pump knows
when your tank is full?
It's because of a tube that runs back up into the fuel pump
As gas flows through the nozzle, a vacuum pressure causes
air to be sucked up.
Once the tank is full, the flow of air stops and the vacuum
begins to build.
In the nozzle handle the pressure builds until it forces a
pops the handle trigger, shutting off the flow of gasoline.
Most modern pumps have an automatic cut-off feature that
stops the flow when the tank is full.
This is done with an auxiliary sensing tube running from just
inside the mouth of the nozzle to a Venturi pump in
the pump handle.
A mechanical valve in the pump handle detects a change of
and closes, preventing the flow of fuel.
average price of gas in the U.S. per year:
In 1920, the average price was $0.20 gal.
In 1930, the average price was $0.20 gal.
In 1940, the average price was $0.18 gal.
In 1950, the average price was $0.27 gal.
In 1960, the average price was $0.31 gal.
In 1970, the average price was $0.36 gal.
The OPEC oil embargo began in
October 1973 and ended March 1974.
In 1974, the average price of gas in the U.S. was
This was equivalent to $2.95 in 2020 dollars.
In 1980, the average price was $1.19 gal.
In 1990, the average price was $1.15 gal.
In 2000, the average price was $1.51 gal.