22 August 2006
5-2.6.1 High mast luminaires light wide high traffic roadways such as interchanges.
These luminaires should use IESNA full cutoff optics to eliminate glare. Additional
shielding may be required to avoid light trespass.
5-2.6.2 Area luminaires light roads, parking lots, storage areas, and depots. Mount
on 7.6 12.2 m (25 - 40 ft) poles. These luminaires should be fully shielded or use
IESNA full cutoff optics to eliminate glare. They should have a neutral aesthetic quality
so that the luminaire "disappears" into its surroundings.
5-2.6.3 Sports Lighting Luminaires are shielded floodlights incorporating internal and
external shields to control glare and light trespass.
5-2.6.4 Pedestrian poles light sidewalks, plazas, and other pedestrian areas. Mount
on 3.7 m (12 ft) poles. These luminaires should have a low brightness but do not
necessarily need to be fully shielded or full cutoff if the lamp is under 4200 lumens.
Their aesthetic character should be appropriate for the surrounding buildings and
Figure 5-6. Pole mounted exterior luminaires.
5-2.6.5 Exterior Luminaire Classification. The National Electrical Manufacturers
Association (NEMA) classifies exterior luminaires by intensity distribution. Tables 5-1
and 5-2 describe the distribution and cutoff classification. One classification refers to
the illuminance pattern produced on the ground or horizontal surface (Table 5-1) and
the other refers to the vertical candela distribution of light from an individual luminaire
(Table 5-2). Each successive classification provides more vertical illuminance, but also
introduces more glare and stray uplight. Full cutoff luminaires are typically used for
roadway and area lighting to minimize glare, light trespass, and light pollution. Semi-
cutoff and non-cutoff should be used only at low mounting heights and with low output
lamps. Refer to paragraph 3-7.2 for additional requirements. Exterior sports lighting
luminaires are classified according to the width of the beam spread and the projection
distance to the field. Table 5-3 outlines these seven classifications.