This 1 Baht commemorative stamp from Thailand, issued in 1981, celebrates the inauguration of the nation’s first expressway, marking a milestone in Bangkok’s modernization and infrastructure development. The artwork shows a vivid aerial view of the elevated highway stretching across the city, lined by urban buildings and vehicles symbolizing progress and connectivity. This issue highlights Thailand’s transition toward a more efficient transport system and stands as a key postal tribute to national advancement in the late 20th century.