Vestadahl

Vestadahl, a Swedish police officer, played a pivotal role in establishing the first traffic regulations in Tehran during the reign of Ahmad Shah Qajar. Invited to Iran in 1912 to assist in organizing the city's police force, he authored the inaugural traffic code, which mandated speed limits of 15 km/h within urban areas and 25 km/h outside city limits. His contributions laid the foundation for modern traffic management in Iran, marking a significant advancement in urban governance.