# 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.
- [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).