LED roadway lighting that's easy to buy. Free trial program and leasing options make it easy to get started with LED. Specification-grade optics deliver efficient, clean, uniform light distributions at a reasonable cost. Optics are factory installed and meet IES Distribution Type IV. LROAD™ 78W replaces 250W metal halide roadway fixtures.

Color: Bronze
Weight: 33.5 lbs



Prepared By:


Driver Info

Type:Constant Current
Input Watts:77W

LED Info

Color Temp:5100K (Cool)
Color Accuracy:71 CRI
L70 Lifespan:100000
Efficacy:132 LPW

Technical Specifications


Dimming Driver:

Driver includes dimming control wiring for 0-10V dimming systems. Requires separate 0-10V DC dimming circuit. Dims as low as 10%.


Constant Current, Class 2, 2000mA, 100-277V, 50-60Hz, 1.1A, Power Factor 99%

Surge Protection:

6kV surge suppression protection tested in accordance with IEEE/ANSI C62.41.2.


4.5% at 120V, 13.9% at 277V

Power Factor:

99.5% at 120V, 93.6% at 277V


DLC Listed:

This product is on the Design Lights Consortium (DLC) Qualified Products List and is eligible for rebates from DLC Member Utilities.
DLC Product Code: P2P3H5ZS

UL Listing:

Suitable for wet locations as a downlight

IESNA LM-79 & IESNA LM-80 Testing:

RAB LED luminaires and LED components have been tested by an independent laboratory in accordance with IESNA LM-79 and LM-80.

LED Characteristics


100,000-hour LED lifespan based on IES LM-80 results and TM-21 calculations


Six (6) multi-chip, 13W, high-output, long-life LEDs

Color Consistency:

7-step MacAdam Ellipse binning to achieve consistent fixture-to-fixture color

Color Stability:

LED color temperature is warrantied to shift no more than 200K in CCT over a 5 year period

Color Uniformity:

RAB's range of CCT (Correlated Color Temperature) follows the guidelines of the American National Standard for Specifications for the Chromaticity of Solid State Lighting (SSL) Products, ANSI C78.377-2017.


IES Classification:

The Type IV distribution (also known as a Forward Throw) is especially suited for illuminating the perimeter of parking areas and for intersections. It produces a semicircular distribution with essentially the same candlepower at lateral angles from 90° to 270°.

Effective Projected Area:

EPA = 0.75

IP Rating:

Ingress Protection rating of IP66 for dust and water

Vibration Rating:

Industry-leading 5G vibration rating per ANSI C136.31.

Ambient Temperature:

SuitableFor use in 40°C (104°F) ambient temperatures

Cold Weather Starting:

Minimum starting temperature is -40°C (-40°F)

Thermal Management:

Superior thermal management design with external Air-Flow fins provides maximum operational life, even in high ambient temperature environments


Tempered glass lens


Die cast aluminum housing, lens frame and mounting arm


Fits most standard roadway upsweep arms. Adaptor brackets supplied fit 1", 1 1/4", 1 1/2" and 2" OD arms.

Wedge Mounting Option:

Allows field adjustment of +/- 5 degree tilt to achieve a level installation of LROAD78 universal adaptor roadway fixtures. Wedge Mounting available here.


Specular vacuum-metallized polycarbonate


High temperature silicone gaskets


Formulated for high-durability and long lasting color

Green Technology:

Mercury and UV-free. RoHS compliant components.



The LROAD™ design is protected by patents pending in the U.S., Canada, China, Taiwan and Mexico.


RAB warrants that our LED products will be free from defects in materials and workmanship for a period of ten (10) years from the date of delivery to the end user, including coverage of light output, color stability, driver performance and fixture finish. RAB's warranty is subject to all terms and conditions found at


Replaces 250W Metal Halide

Buy American Act Compliance:

RAB values USA manufacturing! Upon request, RAB may be able to manufacture this product to be compliant with the Buy American Act (BAA). Please contact customer service to request a quote for the product to be made BAA compliant.


BUG Rating:

B1 U0 G2



  • Ideal for parking areas and for intersections
  • 78W High-Performance LED
  • Replaces 250W metal halide roadway fixtures
  • 27 year lifespan dramatically reduces maintenance and re-lamping costs
  • Precision optics deliver maximum downward street side lumens with uniformity and minimal glare
  • Compatible with standard roadway arms
  • Universal adaptors for 1", 1 1/4", 1 1/2" and 2" OD pipe included
  • Industry-leading 5G vibration rating per ANSI C136.31
  • Easy-access electrical compartment makes wiring fast and secure
  • 10-Year, No-Compromise Warranty

Ordering Matrix

FamilyDistributionWattageMountingColor TempFinishOptionsOther Options
  • 4T = Type IV
  • 3T = Type III
  • 2T = Type II
  • 50 = 50W
  • 78 = 78W
  • 105 = 105W
  • 125 = 125W
  • 150 = 150W
  • Blank = Roadway Arm
  • SF = Slipfitter
  • Blank = 5000K (Cool)
  • N = 4000K (Neutral)
  • Y = 3000K (Warm)
  • Blank = Bronze
  • RG = Gray
  • W = White
  • Blank = No Option
  • /PCT = 120-277V Twistlock Photocell
  • /PCS = 120V Swivel Photocell
  • /PCS2 = 277V Swivel Photocell
  • /BL = Bi-Level Control
  • /D10 = 0-10V Dimming
  • /480 = 480V Driver
  • /480/PCS4 = 480V w/ 480V Swivel Photocell
  • /480/PCT4 = 480V w/ 480V Twistlock Photocell
  • Blank = Standard
  • USA = BAA Compliant