NHTSA Complaint #11610720 — 2014 KIA RIO

Driving to work I exited US-26 in Hillsboro, Oregon at the 185th exit. The exit is an uphill ramp with a traffic signal at the top of the hill. The traffic signal at the end of the ramp was green. I was following a Tesla Model Y and I saw the brake lights activate. I applied my brakes causing my car to slow down and then I had to proceed through a yellow light because I did not think I could stop safely without ending in the intersection. At the next traffic signal, I rolled down my window and yelled to the other driver to not apply their brakes when they are proceeding uphill through a green light. The other driver told me it is "regenerative braking." Unnecessary braking causes disruptions in the flow of traffic. It does not make sense that brake lights would activate if the driver is not applying the brakes.