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The installation of smart traffic signal systems at 72 key intersections throughout Bangkok has resulted in an average reduction of travel delays by between 10% and 41%, according to Governor Chadchart Sittipunt on Thursday.
The city has transitioned from traditional fixed-time traffic lights to an adaptive system that utilizes advanced image-processing cameras and AI-powered software. This technology detects live traffic volumes in each direction, adjusts green light durations accordingly, and minimizes waiting times when no vehicles are present.
Additionally, the system monitors delay times to prevent congestion from spilling over beyond intersections, as stated by the Bangkok Metropolitan Administration (BMA).
The 72 intersections equipped with the adaptive signals include major roads such as Rama IX, Din Daeng, Phaya Thai, Sukhumvit, Ploenchit, Rama I, Rama IV, Sathon, Silom, Surawong, Si Phraya, and Phahon Yothin.
Previously, Bangkok operated 561 traffic lights mostly on fixed schedules or manually controlled by police, which often led to inefficient traffic flow and unnecessary delays.
Chadchart noted that the new adaptive systems have demonstrated promising results, improving traffic flow by approximately 15% during non-peak hours, with ongoing assessments during rush hours in collaboration with law enforcement.
The benefits of these systems include smoother vehicle movement, fewer stops, reduced fuel consumption, and lower air pollution levels. The city plans to expand the adaptive traffic system to an additional 200 intersections next year to cover more critical areas.
Chadchart emphasized that, despite the advancements in technology, traffic discipline remains vital. Compliance with traffic laws and proper signal adherence by all road users are essential for the systems to operate effectively.
In particularly congested zones, a combined approach involving smart traffic systems and police oversight is still necessary to manage complex traffic situations.
