Why key corners of Miami’s F1 track are “on the limits of design”

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…