Parking Lots

UFC 3-530-01

22 August 2006

PARKING FACILITIES

Parking Lots

A

Fully shielded or full cut-off

luminaires control glare

and reduce light pollution

and trespass.

Spacing of luminaires

provides uniform horizontal

illuminance in parking

areas.

EQUIPMENT RECOMMENDATIONS:

LUMINAIRE

LAMP

CONTROLS

Pole mounted metal halide,

Metal halide, induction, or

Control with photocell,

A

induction, or HPS luminaire.

high-pressure sodium lamp.

timeclock, or motion sensor

(only with induction lamp).

CRITICAL DESIGN ISSUES:

Direct Glare: Because the surroundings may be very dark at night,

consider direct glare from luminaires and excessive contrast of surfaces.

Luminaires should use shielded lamps and as low a wattage as possible.

Light Pollution / Trespass: The use of fully shielded or IESNA full-cutoff

luminaires eliminates direct light above the horizontal plane. Using cut-off

optics and low wattage lamps can minimize light pollution. Shielded

luminaires minimize the chance of light trespass on a neighboring property

or building.

Modeling of Faces or Objects: By providing light from multiple directions,

objects and people are accurately rendered and modeled.

Peripheral Detection: Our sense of security relies heavily on peripheral

vision. Research shows that peripheral vision and detection are enhanced

under white light. White light (as opposed to more orange light produced

by high-pressure sodium) allows faster peripheral detection than the

"fuzzy" high-pressure sodium light sources. Also, colors are rendered

more accurately under white light.

Reflected Glare: Wet surfaces often provide a surface that has the

potential for reflected glare. Select and locate luminaires to minimize this

as much as possible.

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