サムットサーコーン県
The SRT Dark Red Line is part of the planned SRT Red Line suburban railway system to serve the greater Bangkok Metropolitan Region which includes Bangkok Province and 4 adjoining provinces. It runs on a north–south axis through Bangkok. When fully completed, the line will extend from Thammasat University's Rangsit campus in Pathum Thani Province to Maha Chai in Samut Sakhon Province for a full length of nearly 87 km.