From the article, for Torchman:
"The colour temperature of plain white LEDs is too high (5,500k) for street lamp use. "It looks too cool," said Lansink, "You need warmer light for street lighting."
As such, the luminair has six 3W white Luxeon III LEDs and 12 amber 1W devices which brings the colour temperature down to 2,700k, 3,200k or 4,000k as requested.
With 8m between 4m high masts, ground illumination averages at 10Lux, which means the lamp posts are suited to pedestrian areas."
What this means is that they have 18 LEDs per panel, two panels per lamp. This is something you could build for yourself. I wonder how they did the radiator? It would serve as a structural support, brainbox housing and wire run enclosure too.