A study has been made of optical aspects of airport control towers as part of a planned general optimization of control towers by Transport Canada. Problems found were reflections, glare, visual obstructions, identification of distant objects, and excessive solar heat. The study makes recommendations on cab shape, tower height, glazing, shades, sunglasses, binoculars, and internal lighting. Proper choice of cab shape (e.g., 30° window inclination and 12–28 sides) provided effective control of reflections. Some plastic shades were found to increase the risk of eye damage. Two tower cabs incorporating the recommendations have been built and were found to be satisfactory.
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