Hamilton suggests more F1 circuits could switch between day and night races

More Formula 1 circuits could eventually have the option to switch between daytime and night races, Lewis Hamilton suggested during the Singapore Grand Prix weekend.

Hamilton said night racing works particularly well in extreme heat. He pointed to Qatar, where a race in the middle of the day could be miserable for fans and everyone in the paddock.

He recalled testing in Bahrain in extreme heat and telling Crown Prince Salman that the circuit would look spectacular at night. Bahrain joined the calendar as a daytime race in 2004 and switched to night running in 2014.

Hamilton also recalled testing Singapore's night-race concept on a simulator while at McLaren. The 2008 Singapore Grand Prix was Formula 1's first night race. Madrid, he said, is beautiful by day but could also be an appealing venue at night.