You measure by traffic conditions - it has improved with D-ring road opening. To get to Lusail from the Airport would probably take at least 30 minutes on a "good" day/time. That can easily double with commuter traffic and the attendant accidents. There are dozens of fender benders here each day and while not serious, they are often told by the police to "stay where they are" which means traffic gets jammed up behind them.

Just before schools go in and just after they end for the day are probably the 2 worst times for traffic (during daylight hours).