Good parking lot and exterior lighting puts even, glare-controlled light where people walk and drive, and keeps it off the sky and the neighbors. Here’s how it comes together. Choose area lights with the right distribution and pole height, wall packs and canopy lights with real cutoff optics, and photocell or sensor controls. Then use BUG ratings to compare fixtures. That approach gives you better security and lower energy bills than simply buying the brightest fixture.
Area lights and pole heights
Pole-mounted area lights, also called shoebox lights, do most of the work in a parking lot. Two choices matter most: the distribution type and the mounting height.
Distribution types
- Type II: a long, narrow pattern for drives and walkways.
- Type III: a wider forward throw for poles along the edge of a lot.
- Type IV: strong forward throw with little backlight. It’s good at property lines and against buildings.
- Type V: a round or square pattern for poles in the middle of a lot.
Pole height guidelines
| Application | Common pole height range |
|---|---|
| Walkways, small lots, pedestrian areas | 12–20 ft |
| Typical retail and office lots | 20–25 ft |
| Large lots, distribution centers | 25–35 ft |
These are industry rules of thumb. Taller poles mean fewer poles, but they can also mean more spill and glare. Many cities and counties cap pole heights or regulate outdoor lighting, so check your local zoning code first.
If you’re reusing existing poles, confirm the pole’s wind-load rating and the new fixture’s effective projected area (EPA). In Georgia, summer storms put real stress on poles. You can compare options in our parking lot fixtures selection.
Wall packs
Wall packs light building perimeters, doors and drive lanes. The old “glowing box” style throws light straight into drivers’ eyes and the neighbors’ windows. Modern full-cutoff or forward-throw LED wall packs keep light pointed down. That also makes the building facade easier to see on camera instead of washing it out with glare. Mount them at a height that suits the area you need to cover, and look for a U0 rating, meaning no uplight.
Canopy lights
Fuel stations, drive-thrus, loading docks and covered entries use low-profile canopy lights. They mount flush or near-flush to the canopy deck. Look for wet-location ratings and sealed housings, because Georgia’s humidity and wind-driven rain find every gap. Optics should keep bright lenses out of drivers’ direct view. Some utility rebate programs list gas station canopies as a separate rebate measure.
Dusk-to-dawn, photocells and controls
- Photocells: a button photocell built into the fixture, or a twist-lock photocell that plugs into a standard receptacle. Either one turns lights on at dusk and off at dawn. Dusk-to-dawn lights come with photocells built in.
- Time clocks and astronomic timers: combine with photocells to dim or switch off zones after business hours.
- Motion sensors: bi-level fixtures that idle at a low level and brighten when someone arrives.
- Networked controls: schedule, dim and monitor fixtures across a property from one place.
Controls also matter for rebates. Utility Company Rebate Programs often require exterior fixtures to have a working photocell or time clock to qualify for lighting rebates.
BUG ratings and full cutoff explained
Full cutoff is an older IES classification. A full-cutoff fixture emits zero candela at 90° above nadir, which means no light at or above horizontal. It also emits less than 10% of rated lamp lumens at 80° above nadir. In 2007, IES replaced cutoff classifications with BUG ratings, defined in IES TM-15-11. IES developed BUG together with the International Dark-Sky Association, now called DarkSky.
| Letter | What it measures | Why you care |
|---|---|---|
| B (Backlight) | Light directed behind the fixture | Spill onto neighbors and property lines |
| U (Uplight) | Light above the fixture’s horizontal plane | Sky glow and wasted energy |
| G (Glare) | Light at high angles, 60–90° | Discomfort and reduced visibility for drivers and pedestrians |
Each letter is rated from 0 to 5, and lower means less light in that zone. A fixture rated B1-U0-G1, for example, has low backlight, no uplight and low glare. Outdoor lighting ordinances based on the IES and DarkSky Model Lighting Ordinance set limits in BUG values instead of “full cutoff.”
DarkSky and IES published five principles for responsible outdoor lighting in 2020:
- Light should be useful.
- It should be targeted.
- It should be no brighter than necessary.
- It should be controlled, used only when needed.
- It should be warm-colored where possible.
Uniformity and security
A lot with blinding hot spots and dark pockets between poles feels less safe than one that’s evenly lit at a moderate level. Eyes adapt to the brightest thing in view, so the shadows look darker. That’s why designers watch uniformity ratios, such as maximum-to-minimum, as closely as averages. Parking lots are covered in ANSI/IES RP-8, the IES roadway and parking standard.
- Vertical light on faces and license plates matters for people and cameras alike.
- Glare control helps your cameras. Security guidance recommends choosing fixtures that reduce glare at the camera lens. If you’re adding or upgrading security systems, plan lighting and camera positions together.
- Color: follow DarkSky’s advice to use warmer light where possible, and balance that against what your cameras need.
Retrofit or replace?
- Retrofit kits or mogul-base LED lamps reuse existing housings. They have lower upfront cost and are fast to install, and utility rebate catalogs cover some of them. However, LED lamps in old fixtures with glass refractors often give you poor optical control and glare.
- New fixtures get you engineered optics, a published BUG rating, a better seal against weather and integrated controls. Choose them when housings are corroded, lenses have yellowed or you need to fix glare and spill.
- Check the poles and arms either way. Rust at the base or a failed anchor bolt makes a new fixture pointless.
Frequently asked questions
What pole height is best for a parking lot?
Many retail and office lots use poles in the 20–25 foot range, and larger lots go taller. Local zoning, lot layout and glare goals decide the final number, so start with a photometric plan.
What does a BUG rating like B2-U0-G2 mean?
It rates backlight, uplight and glare from 0 to 5. B2-U0-G2 means moderate backlight, no uplight and moderate glare. Lower numbers are better for neighbors and the night sky.
Is “full cutoff” the same as DarkSky Approved?
No. Full cutoff is an older IES category. DarkSky Approved is a separate certification with its own criteria, which include limits on high-angle light and a required dimming option.
Do exterior LED upgrades qualify for utility rebates?
Many do, including fixtures, retrofit kits and pole-mounted lighting replacing HID. Programs commonly require DLC listing and a working photocell or time clock. Terms and amounts change, so check the current program.
Planning a parking lot, perimeter or canopy upgrade for a property in Alpharetta, Johns Creek, Cumming or elsewhere in metro Atlanta? Our lighting design team can help with fixture selection, controls and rebate paperwork. Start with our Commercial Accounts page.
Sources
- TxDOT Highway Illumination Manual: Cutoff and BUG Rating
- BNP Media / Kim Lighting: Site Lighting Optical Systems (IES full cutoff definition)
- Landscape Forms: BUG Rating System 101 (IES TM-15-11 zones)
- Lighting Analysts: Classifying Outdoor Luminaires, The Limits of BUG (Model Lighting Ordinance and TM-15-11)
- DarkSky: Lighting Principles
- DarkSky and IES: Joint Release on Five Principles for Responsible Outdoor Lighting (2020)
- DarkSky: Approved Luminaires Program Packet (2025)
- LightNOW: IES Releases Update to Roadway and Parking Lighting Standard RP-8
- ASIS Security Management: Lighting Standards for Parking Facilities (2025)
