In the United States, traditionally most toll plazas used regular red/green ball lights for indicating if a lane is open or not. However, under the current MUTCD standard, the symbolic indicators (red X and green arrow) are recommended, since the use of the red/green ball lights are contrary to their traditional meanings of stop and go.
So, does anyone know of any examples of toll plazas that still use the red/green ball lights? I know one example are the toll plazas on the Chesapeake Bay Bridge Tunnel, which surprisingly were not upgraded when the plazas were renovated in the late 1990s.
The toll plazas on the Autopistas in Puerto Rico were upgraded with the symbolic signs in 1996. The toll plaza on the Teodoro Moscoso Bridge in San Juan retained the ball lights longer, however, they may have since been upgraded when AutoExpreso was implemented (since the AutoExpreso lanes use a special indicator with both the red X/green arrow and a green AutoExpreso logo next to it); I haven't been on the Teodoro Moscoso Bridge in several years.