Listen to this article UK specialists Apex Circuit Design laid out the 5.41-kilometre anticlockwise circuit, which hosts its first Formula 1 Grand Prix next weekend, around the Hard Rock Stadium in Miami Gardens. Its most sinuous section is through Turns 13-16, which wind around the entrance and exit ramps and beneath the flyover sections of the Florida Turnpike, the main toll road between Miami and Orlando, and NW 203rd Street. The track is expected to produce an average lap speed of just under 135mph, and this slow-speed section precedes a 1.28km, 320kph straight that leads towards the hairpin at Turn 17. The approach to Turn 17 should be the track’s key overtaking opportunity and the compression effect of the Turn 13-16 sequence should ensure close running onto the back straight. The FIA regulations regarding clearance of overhead structures to the track surface means the layout needs to dip beneath the two overpasses, shortly after rising 11 feet …