"The new design strips away the familiar color-coding of the subway system routes while still maintaining a level of hierarchy and functionality. All lines of the map are forced to conform to an underlying grid of 45 and 90 degree angles, yet surprisingly, the landmass contours here are more true-to-life than on the MTA map. The florescent red color becomes an unpredictable variable, as legibility can change completely under different lighting conditions. The neon effect can be intense and retina-burning under certain lamps, washed out and unreadable in other environments, or glow otherworldly under black-lights."
I could not have put it better myself.