Pengaruh Petugas Tidak Resmi Terhadap Lalu Lintas Pada Simpang Tiga Bersinyal di Jl. Kaliurang KM.8 Yogyakarta

The congestion at the PLN intersection Kaliurang street Km 8 is reason of Unofficial Officers or so-called "Pak Ogah" act as traffic regulators assist in movement driving from minor roads to major roads. Therefore, objective study was determine impact on performance intersections. survey conducted for 3 days which were volume survey, a vehicle speed, behavior, and length queue. VISSIM modeling analysis results showed that using signals better than existing conditions with decrease average delay value 18.44% queue 80.34%. Meanwhile, condition intersections unofficial officers decreased by an 22.10% compared conditions. However, queued increased 22.54% Although delays other conditions, arrangements had many conflicts, creating risk accidents intersection.