I have this memory of reading a short story of a dystopian future where the main character was compelled (by law?) to purchase "consumer goods". Upon arriving home he packed the purchased goods into a recycling slot.
As per Story about a future of over-production, could this be Frederik Pohl's "The Midas Plague"?
In a world of cheap energy, robots are overproducing the commodities enjoyed by mankind. The lower-class "poor" must spend their lives in frantic consumption, trying to keep up with the robots' extravagant production, while the upper-class "rich" can live lives of simplicity. Property crime is nonexistent, and the government Ration Board enforces the use of ration stamps to ensure that everyone consumes their quotas. The story deals with Morey Fry, who marries a woman from a higher-class family. Raised in a home with only five rooms she is unused to a life of forced consumption in their mansion of 26 rooms, nine automobiles, and five robots, causing arguments. Trained as an engineer, Morey modifies his robots to enjoy helping to consume his family's quota. He fears punishment when his idea is discovered, but the Ration Board—which has been looking for a way to abolish itself—quickly implements Morey's idea across the world.
You can read the full story online here
This is "The Subliminal Man" by J. G. Ballard, from 1963. It appeared in New Worlds Science Fiction, in January 1963. (Unfortunately archive.org is missing this issue.) It has been collected in lots of places.
The first line of the story is
"The signs, Doctor! Have you seen the signs?"
The first two pages are all about the signs themselves, and what their purpose might be.
In a comment, @john-rennie wrote "There are roads with deliberately roughened surfaces that reduce car life due to the vibration and cause people to buy more cars."
Ostensibly an aid to lane discipline, the surface of the road was covered with a mesh of small rubber studs, spaced progressively further apart in each of the lanes so that the tire hum resonated exactly on 40, 50, 60, and 70 mph. Driving at an inter- mediate speed for more than a few seconds became physiologically painful, and soon resulted in damage to the car and tires.
When the studs wore out they were replaced by slightly different patterns, matching those on the latest tires, so that regular tire changes were necessary, increasing the safety and efficiency of the expressway. It also increased the revenues of the car and tire manu- facturers, for most cars over six months old soon fell to pieces under the steady battering, but this was regarded as a desirable end, the greater turnover reducing the unit price and making necessary more frequent model changes, as well as ridding the roads of dangerous vehicles.
More about the planned obsolescence:
"Look, I don't want a new infrared barbecue spit; we've only had this one for two months. Damn it, it's not even a different model."
"But, darling, don't you see, it makes it cheaper if you keep buying new ones. We'll have to trade ours in at the end of the year anyway, we signed the contract, and this way we save at least twenty dollars. ...."
About deliberately discarding goods:
Carefully he poured his whiskey into the sink.