Tanzi Propst/Park Record Parkites navigated the traffic during the three-day Martin Luther King Jr. Day holiday in January. The Sundance Film Festival later in January and in early February was held in an online setting, eliminating the typical backups that are some of the worst of the year. And the community by Tuesday morning had cleared the road congestion of Presidents Day weekend, another stretch that is marked by lines of cars. But City Hall cautions there are several more days when the backups could be especially bad. Officials outlined the timeframe from Jan. 15 until Feb. 21 as the peak period for traffic. The end date, which is Sunday, is timed to coincide with the week after Presidents Day weekend.