Is this intertemporal price discrimination or is it an example of peak-load pricing:
I wouldn't have thought this would happen, but it appears that a gas station I pass during my commute practices time-of-day pricing, charging more during the peak period and charging less during the off peak.
For the past two months, every time I have passed the station in the evening, the price of gasoline has been at least three cents/litre lower than it was in the morning on the way to work. This station is very convenient for people to pull into on the way into London, but it is very inconvenient for people who are leaving the city at the end of the workday.
Being able to charge higher prices during peak times helps alleviate waiting times. Consumers pay either way: either in terms of waiting longer and getting a lower price or not waiting as long and getting a higher price. The cost takes a different form. Perhaps the gas station has extra staff on hand during the peak time and the higher price for gas helps pay for the extra staff.
I'll also guess that this gas station manager displays the gas prices on an electronic marquee and that price changes can easily be displayed on the marquee.