It also significantly speeds up the flow of traffic and eases congestion. Right on red is one of the best things the US has done in regards to easing congestion - now if only we'd invest in more public transit specifically trains/lightrail so they would be more viable. For example, I was just in Atlanta and the time difference between getting an Uber from the airport to my hotel was maybe 10 minutes. Here in Denver that difference was almost an hour which is unacceptable, I and most others can't just absorb an extra hour or two into their commute