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Roundabout Technologies
Roundabout Technologies builds AI-powered traffic signal control. Using existing traffic cameras, our perception system builds a live 3D map of every car, bus, bike, and pedestrian at an intersection, and a reinforcement-learning agent makes the signal change that reduces wait times the most — within the guardrails of the city's timing plans.
- Authority
- 46 reach 0 · trust 10 · quality 21 · freshness 15
- Tier
- listed
- llms.txt
- https://www.roundabout.tech/llms.txt
- Sections
- 4
- Links
- 13
- Size
- 2337 bytes
- Registered
- 2024-04-16
- Country
- United States Hosting inference
- Hosting country
- United States Hosting inference
- Country evidence
- No published address evidence collected yet
- For agents
- Documentation: developer or product docs worth reading, nothing to call
- First seen
- 2026-10-27T13:36:39.028Z
- Last checked
- 2026-10-27T13:36:39.576Z
- Badge
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-27T13:36:39.033Z. Cached copy · Source on roundabout.tech
# Roundabout Technologies
> Roundabout Technologies builds AI-powered traffic signal control. Using existing traffic cameras, our perception system builds a live 3D map of every car, bus, bike, and pedestrian at an intersection, and a reinforcement-learning agent makes the signal change that reduces wait times the most — within the guardrails of the city's timing plans.
## Product
- [Reduce wait times](https://www.roundabout.tech/reduce-wait-times): How the system cuts vehicle wait times across intersections, corridors, and grids, with results from San Anselmo, CA (25% drop in rush-hour wait times).
- [Improve safety](https://www.roundabout.tech/improve-safety): Safety features such as dilemma-zone protection, all-red extension, and pedestrian/cyclist detection.
- [San Anselmo case study](https://www.roundabout.tech/blog/san-anselmo-case-study): Video case study of the most congested intersection in Marin County, CA.
- [All road conditions](https://www.roundabout.tech/all-road-conditions): Real intersection footage of our perception system tracking road users through sun glare, heavy rain, and night.
## Blog
- [Blog](https://www.roundabout.tech/blog): Notes on traffic signals, perception, and deployments from the Roundabout team.
- [Induced demand doesn't make reducing wait times pointless](https://www.roundabout.tech/blog/induced-demand): Collin Barnwell on induced demand and the value of mobility.
- [Introducing mutcd.fyi](https://www.roundabout.tech/blog/introducing-mutcd-fyi): Roundabout's searchable, deep-linkable MUTCD, with sign-code lookup and state editions.
- [Why does Roundabout use cameras instead of radar or lidar?](https://www.roundabout.tech/blog/lidar-vs-radar-vs-cameras): A deep dive into sensor selection for traffic applications.
## Company
- [Home](https://www.roundabout.tech/): Overview of AI-powered traffic signals.
- [Team](https://www.roundabout.tech/team): Founders and team background (Stanford, Zoox, Verily, Google).
- [Contact](https://www.roundabout.tech/contact): Schedule a demo or get in touch.
- [Newsletter](https://www.roundabout.tech/newsletter): Sign up for product and deployment updates.
## Reference
- [MUTCD browser](https://www.mutcd.fyi/): Free, searchable full text of the Manual on Uniform Traffic Control Devices (11th edition and state editions).
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