"Järlström said if the ITE accepts his solution, the duration of a yellow light in the right-turn scenario he described in 2015 would be extended from 3.2 seconds to 4.5 seconds using current input values – driver-vehicle perception-reaction time and maximum safe, comfortable deceleration. Such timing may vary depending on other considerations, but in general the adoption of Järlström's formula should result in slightly longer yellow lights."