Did a quick hack and the change below to data-updates.lua fixes it for me. I assume that Bobs (?) also changes the "rail-signals" technology.
local tech_name = "rail-signals"
if mods["IndustrialRevolution"] or not data.raw["technology"][tech_name] then
tech_name = "automated-rail-transportation"
end
But then it does not help much as the FARL equipment cannot be added to modded (read: bobs) locomotives.