Black Triangle Sighting in White Oak, Maryland on October 23rd 2015 – Triangular shaped craft with 3 red lights underneath

This morning I was driving North on Route 29 towards Columbia. I was past the ICC. I saw a metallic silver object and thought it was too big to be a balloon. I kept looking at it, it didn���t make noise. It was a triangular shape but if it turned, it looked like a different shape. There were 3 big red lights on the bottom of it. I tried to look at it as long as I could but the stoplight turned green and I had to keep driving. It wasn���t being chased, it was just moving southbound fairly slowly. It moved very smoothly. Enough for me to have been looking at it during the red stoplight and not lost it from sight. It was a clear morning so I know it wasn���t anything else. And I know what a plane shape is like but this didn���t have any wings jutting out or a tail. It was just a smooth metallic triangle with lights on the bottom. I wasn't afraid, felt pretty calm, intrigued when looking at the object. I was interested to see if it would disappear or if I'd notice it looked like a plane or helicopter but the entire time it stayed the same triangular shape with the three red lights continuously on.