S2TLD (SJTU Small Traffic Light Dataset)

S2TLD 是一个交通信号灯数据集，包含 5,786 张图像，大约 1,080 * 1,920 像素和 720 * 1,280 像素。它还包含 1,4130 个实例的 5 个类别（包括红色、黄色、绿色、关闭和等待）。这些场景涵盖了各种各样的道路场景和典型的：
*繁忙的街景市中心，
*密集的走走停停交通
*照明/曝光的强烈变化
*闪烁/波动的交通信号灯
*多个可见的交通信号灯
* 可能与交通信号灯混淆的图像部分（例如大圆形尾灯）

S2TLD is a traffic light dataset containing 5,786 images with resolutions of approximately 1,080 × 1,920 pixels and 720 × 1,280 pixels. It also includes 14,130 instances across 5 categories, namely red, yellow, green, off, and waiting. The scenarios cover a wide range of road scenes, with typical examples including:
* Busy downtown street views
* Heavy stop-and-go traffic
* Severe variations in lighting and exposure
* Flickering or fluctuating traffic lights
* Multiple visible traffic lights
* Image regions that may be confused with traffic lights (e.g., large circular taillights)