Title
TinyLight: Adaptive Traffic Signal Control on Devices with Extremely Limited Resources.
Abstract
Recent advances in deep reinforcement learning (DRL) have largely promoted the performance of adaptive traffic signal control (ATSC). Nevertheless, regarding the implementation, most works are cumbersome in terms of storage and computation. This hinders their deployment on scenarios where resources are limited. In this work, we propose TinyLight, the first DRL-based ATSC model that is designed for devices with extremely limited resources. TinyLight first constructs a super-graph to associate a rich set of candidate features with a group of light-weighted network blocks. Then, to diminish the model's resource consumption, we ablate edges in the super-graph automatically with a novel entropy-minimized objective function. This enables TinyLight to work on a standalone microcontroller with merely 2KB RAM and 32KB ROM. We evaluate TinyLight on multiple road networks with real-world traffic demands. Experiments show that even with extremely limited resources, TinyLight still achieves competitive performance. The source code and appendix of this work can be found at \url{https://bit.ly/38hH8t8}.
Year
DOI
Venue
2022
10.24963/ijcai.2022/555
European Conference on Artificial Intelligence
Keywords
DocType
Citations 
Multidisciplinary Topics and Applications: Transportation,Multidisciplinary Topics and Applications: Smart Cities
Conference
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Dong Xing111.40
Qian Zheng24413.91
Qianhui Liu344.48
Gang Pan41501123.57