[DE / Expert] A pair of SNCB HLE 18s on tests in Wegberg-Wildenrath

The best thing about railway test circuits is that you never know what rolling stock will come up next. And while newly produced, even prototype vehicles are the norm, sometimes there are also ‘exotic’ appearances by well-known series. Such is the case of SNCB/NBMS’s HLE 18 electrics at the Wegberg-Wildernath circuit: