Adiós, Ofo.

The Chinese bike-share operator with the bright yellow two-wheelers is riding out of Dallas, company and city officials confirmed Thursday.

And another rental company isn't far behind: San Francisco-based Spin is also beating a retreat. The company still has some bikes on Dallas County community college campuses, according to a local representative, but is no longer serving the city as a whole.

Spin was one of the first bike-share companies to hit Dallas streets last August, shortly after Garland-based VBikes and the Bay Area's LimeBike began clogging up downtown sidewalks. But its orange bikes made up a small percentage of rentals around town: At one point, there were an estimated 20,000 bikes across the city — most in or near the city center. Of those, Spin officials said Thursday, fewer than 700 belonged to them.

But Ofo was different.

As recently as June 27, when the Dallas City Council passed rules that required bike-share operators to register and pay a fee per bike, the company said it had about 5,000 bicycles scattered throughout the city. Now, that number is officially zero.

1 / 2A broken Spin rental bike rests in the grass near the Margaret Hunt Hill Bridge along the Trinity Skyline Trail last month(Smiley N. Pool / Staff Photographer) 2 / 2A broken Spin rental bike rests under the Ronald Kirk Bridge near the Margaret Hunt Hill Bridge along the Trinity Skyline Trail on Tuesday, June 5, 2018, in Dallas. (Smiley N. Pool/The Dallas Morning News)(Smiley N. Pool / Staff Photographer)

"Ofo has begun to re-evaluate markets that present obstacles to new, green transit solutions, and prioritize growth in viable markets that support alternative transportation and allow us to continue to serve our customers," said Everett Weiler, Ofo's general manager for the Texas market. "As a result, we will not be seeking a permit to operate in Dallas and we thank the city for allowing us to introduce bike-share to millions of people in Texas."

The companies' exits come as no surprise.

Ofo was the only company to oppose Dallas' bike-share regulations, insisting last month they were "a step backward with such exorbitant fees that will drastically reduce access to affordable transportation options."

Then stories began circulating Wednesday that Ofo, which charged users $1 an hour per ride, had laid off most of its U.S. staff and withdrawn from several countries. Most news accounts said the company was in the process of deciding in which markets it would remain. But one report, from Quartz, said Ofo would stick to only a handful of American cities: New York, Seattle and San Diego.

Ofo had been in 30 U.S. markets, and, until recently, hoped to expand into at least 70 more. In March alone, it raised around $900 million in yet another round of funding, according to a recent Forbes story about its expansion plans.

Ofo, though, might not be gone for long: Forbes reported last month that the company is looking to add electric scooters to its inventory to keep up with Lime and Bird. Those are the two companies that brought scooters to Dallas last month after the council lifted restrictions that kept them off city streets and sidewalks. Ofo wants to begin a roll out some time this summer.

Spin, too, is going electric. In fact, its website has been stripped of all photos and mentions of bicycles. It now says the company "provides your community with dockless scooter-share to get you where you need to go."

Jared White, Dallas' transportation planner who doubles as City Hall's de facto bike czar, said "anecdotally, at least," it appeared Ofo's fleet began shrinking in recent weeks. In fact, he said, it looks like all the rental bikes in town have begun disappearing — just as electric scooters became legal, at least for the moment.

Matthew Bashover, 60, test rides a Bird electric scooter along Main Street as the company debuted it's fleet of electric scooters in downtown Dallas on June 29. (Ben Torres / Special Contributor)

"I can see doing scooters or, from my point of view, electric-assisted bikes within the Dallas market," White said Thursday. "It's easier to get around on a powered vehicle than a bike" — especially when temperatures scrape the 108-degree mark.

"This may be where the market's taking them," White said. "We figured over time the market would shake itself out. Ofo may just be the first."

But the companies should remember: Electric scooters aren't permanently legal in Dallas. The council only agreed to a six-month trial period when it lifted the restrictions last month.

"Time will tell," White said of city regulations. "But it has been an interesting day. We figured something like this would happen. I'll be interested to see if there's a domino effect in the industry, or if it's a little correction."