Neutron Holdings, Inc., doing business under the name Lime, formerly LimeBike, is an American transportation company based in San Francisco, California.

LimeBike was founded in January 2017 by Brad Bao and Toby Sun, both of whom were executives of Fosun International's venture capital arm.

[10] In January 2018, Lime announced at CES 2018 that they would begin a trial of electric bikes, branded Lime-E, in San Francisco.

[13][14] Public criticism increased in June when it emerged that the scooters were programmed to play a recording of the message "Unlock me to ride me, or I'll call the police" repeatedly, at high volume, when their controls were touched.

[16] Lime applied for car-sharing permits in Seattle in October 2018 and later launched a service in December 2018 with a fleet of Fiat 500 Lounge cars branded as "LimePod.

[20] In October 2018 Lime announced the release of a new model e-scooter with larger wheels, built-in suspension and an aluminum frame to combat vandalism and extend vehicle life.

[24] Further layoffs in April were attributed to the COVID-19 pandemic, with the CEO saying, "We had to pause operations in 99% of our markets worldwide to support cities’ efforts at social distancing.

"[25] Starting in March 2020, due to reduced demand for electric scooters during the COVID-19 lockdown in 2020, Lime suspended services in nearly two dozen countries.

[29] In November 2021, Lime closed an oversubscribed funding round raising $523 million and announced an intention to take the company public in 2022.

[30] The company also announced in 2021 that riders had surpassed 250 million rides using Lime services, making it the largest shared micromobility operator globally in terms of total trips.

The company was forced to temporarily withdraw its scooters from circulation in Auckland and Dunedin, New Zealand, after injuries caused by irregular braking incidents.

According to a 2023 report by consultancy Steer and funded by Lime Bikes: “Services are currently regulated on a borough-by-borough basis via individual agreements with local authorities.

[citation needed] In June 2020, the Australian Competition and Consumer Commission found that Lime covered up at least 50 incidents on its scooters that resulted in injuries such as broken bones and damaged teeth.

[50] Shortly after the Governor's decision, Lime began operating in Milwaukee in a pilot program, until the city again halted scooter rentals because of complaints about riders riding on sidewalks.

[51] In 2022, the leader of London’s Wandsworth Council, Simon Hogg, wrote to the CEO of Lime Bikes drawing attention to the frequent obstructions caused by e-bikes.

Hogg stated: “We receive daily complaints about Lime Bikes blocking pavements, and when I raised this with the company last year they said they would be taking steps to solve this problem.

Unfortunately the actions they have taken have not ensured sustained improvements in the situation and removing Lime Bikes obstructing pavements continues to be necessary.”[52] This issue has yet to be resolved.

Westminster City Council has repeatedly called for the government to introduce legislation to address the limited regulatory powers to manage dockless bike schemes in England.