The ends of Runway 9L/27R at FLL are very near the property line, and its displaced threshold is also very close to that same property line. To meet current design standards, the Federal Aviation Administration (FAA) requires a 1,000-foot-long (305 m) safety area at the end of a runway. However, these standard safety areas have typically been extremely difficult to obtain. In response to the widespread lack of standard safety areas at airports, the FAA, with industry support, undertook a research program to test the suitability of various aircraft arresting systems for commercial aircraft. The result of the investigations was Advisory Circular 150/5220-22 Engineered Materials Arresting System (EMAS) for Aircraft Overruns. This material, and its application at FLL, is the subject of this thread. The answer is EMAS, as already stated, it is present at the real world FLL, as well as many airports through-out the world.
Runway 9R/27L doesn't have them as it isn't used by commercial aircraft, runway 9L/27R is heavily traffic by commercial aircraft.