In the past year, thousands of Ofo bicycles have popped up on the sidewalks of Dallas and other cities — but the company has recently been shrinking its operations. This file photo of Ofo bikes was taken in Singapore last summer.

In the past year, thousands of Ofo bicycles have popped up on the sidewalks of Dallas and other cities — but the company has recently been shrinking its operations. This file photo of Ofo bikes was taken in Singapore last summer.