Volume 11 Issue 2 ( June )

This research intends to provide input from various preliminary studies because there are inconsistencies. There are several countdown timer installations that have a positive influence, there are several previous studies that installing countdown timers have had a negative effect. One of the negative influences is that drivers, when the yellow and red lights flash, continue to drive at the intersection with a countdown timer. In connection with the effect of using a Countdown Timer on motorists who drive when the lights are yellow and red, this research was conducted. Recording was carried out on weekdays and holidays at the Pilangsari intersection, Sragen, Central Java, Indonesia, which included yellow lights after red and yellow lights after green, using the Time Slice Technique. Namely recording in the morning, afternoon and evening. Each for 2 hours. Then the number of vehicles traveling when the yellow light follows the red light (YFR) and when the yellow light follows the green light (YFG) is calculated. Pay attention to morning and evening rush hours. Then tabulation is carried out followed by interpretation of the tabulation results. Based on research, motorcycle riders ride more when yellow lights follow red lights, and light car drivers ride more when yellow lights follow green lights.

Keywords: Countdown Timer, Yellow Light, Driver, Intersection