Infrastructure - Traffic Lights
Contents
Infrastructure - Traffic Lights#
Duckietown traffic lights are more than just blinking lights: they are static robots. Often referred to as “Duckiebots without wheels,” they share many capabilities with the DB18 Duckiebot models, minus the ability to move.
Traffic lights are urban robots equipped to:
Sense: Detect the arrival of a Duckiebot using a camera.
Compute: Perform onboard processing with a Raspberry Pi.
Communicate: Signal other agents through LEDs and connect via Wi-Fi.
Tip
(For advanced Duckietowners only) Traffic lights are specialized cases of Duckietown Watchtowers, i.e., Watchtowers with LEDs. Watchtowers form the foundation of Duckietown Autolabs.
Assembly#
The assembly instructions for traffic lights are available here:
Placement#
Traffic lights are typically positioned diagonally over intersection tiles. Any intersection in Duckietown can host a traffic light.
Note
The lights must be installed at a height of 20 cm above the center of the intersection tile.
The computational stack is mounted in the appropriate housing and positioned outside the allowable driving region. The cables are integrated into the traffic light structure, as detailed in the assembly instructions.
Traffic light pillars must be positioned so that the embedded traffic signs adhere to the appearance specifications.
Fig. 36 A Duckietown-compliant traffic light.#