| Business | Phone |
| Volunteer Trackworks 7140 Philips Hwy, Jacksonville 32256 | (904) 296-6288 |
| H A Bass 7305 Old Kings Rd S, Jacksonville 32217 | (904) 786-1855 |
| Southwest Signal Engineering 7235 Bonneval Rd, Jacksonville 32256 | (904) 443-0083 |
| Safetran Systems Corp 7960 Arlington Expy, Jacksonville 32211 | (904) 725-0783 |
| Quantum Rail Svc Inc 7305 Old Kings Rd, Jacksonville 32219 | (904) 783-4382 |
| Rail Works Corp 6821 Southpoint Dr N, Jacksonville 32216 | (904) 296-5055 |
| North American Signal 12412 San Jose Blvd, Jacksonville 32223 | (904) 288-7045 |
| Fruit Growers Express Co 2565 W 5th St, Jacksonville 32254 | (904) 356-2791 |
| Intermodal Support Svc 301 W Bay St, Jacksonville 32202 | (904) 359-9970 |
| Interrail Signal Inc 12443 San Jose Blvd # 1103, Jacksonville 32223 | (904) 268-6411 |
| Ironhorse Limited 2432 Swan St, Jacksonville 32204 | (904) 475-9200 |