Blue Arch Under the ViaductRed tail-light trails sweep through a Glasgow underpass beneath the heavy, repeating bays of a viaduct. Warm lamps pick out the road markings and weathered walls, while a cobalt-blue arch and scattered graffiti sharpen the nocturnal contrast.From Glasgow After Dark: TracersBlue Wall Beneath the ViaductUnder the low, beam-lined viaduct, traffic turns the curving Glasgow roadway into parallel red and white traces. Receding street lamps pick out the brickwork and narrow pavement, while a saturated blue, graffiti-marked recess on the right interrupts the otherwise dark enclosure.From Glasgow After Dark: Tracers