Perhaps to prevent confusion to aircraft on approach to Rwy 23 yet provide needed lighting for Rowley Road traffic they are low level directional (shielded). Quite smart!
The following user(s) said Thank You: WILLIAMARNOLD
I'm sure that is the reason Peter. That section of road is near parallel to the landing section of that runway and, at night, normal street lighting would be a distraction hence the low-level luminaires.
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