GP Road Slug
Road Slug use was not common on the Florida & Gulf Industries (FGI) AFG-FGC system until the Alabama Midland RR (AMRR) joined the fold in 2018. Due to the light branches and slow speeds on much of the Georgia-Alabama Grain Unit lines, AMRR used road slugs reduced wear on branches and allowed consistent movement of large heavy cuts of cars on the lines. As the FGC and AMRR rosters blended and mixed over the new combined system, AMRR slugs were tested on the FGC, and found to be perfect for US Sugar operations and heavy switching assignments across the system. As a result, FGI worked with Stephens Railcar to standardize the configuration to make motive power assignments easier across the FGC system.
FGI decided to standardize on a GP type carbody for its new GP Road slugs. Several cores of retired GP40-2 units were sent to Stephens Railcar for conversion, but most were created out of Stephens Railcars stocks of GP50 cores it collected for the TGX Program Series One GP65S-TGX. Four axle TGX Program units were not in high demand, so many of the cores were retained for GP40-3 conversion for Georgia Road and recently the FGI GP Road Slug initiative.
| Road Number | Number Of Units | Paint Scheme | Notes |
| FGC 50-51 | 2 | Sunburst Standard Scheme | exx-LN, ex-CSXT; Acquired 1/2002; These AFG units transferred to FGC at start-up of operations during 2018; units dead lined due to various failures; Sent to Stephens Railcar in 2024 for road slug conversion; in service working with FGC GP40-2 420-435 series units equipped at slug masters; slugs are dynamics brake equipped |
| AFG 52-54 | 3 | Sunburst Standard Scheme | exx-MP, ex-UP: cores held by Stephens Railcar; Stripped and rebuilt to GP Road Slugs in 2024; all three units lack dynamic braking as cores lacked this feature |
Georgia Road Transportation 