Register Here | Login | My Account | Shopping Cart | Customer Service | Search| Items in Cart (0) | Quotes (0)
Call 1-800-369-6671
(Military/Intl Sales - 214-616-6180)
LIGHT TOWERS IN STOCK
       
 

Vast Inventory for Fast Shipping. Custom Builds Available, Rentals and Sales.
Most items in stock for fast shipping!! UPS Ship Map Credit cards & Paypal Accepted
Home - Articles You're NOT logged in, Please log in   

Search:
Company Information

Product #:

         
Aevum Control Lighting and Equipment - IIoT
Explosion Proof Lights
Explosion Proof Motors - Motors for Hazardous Locations
Industrial and Vaporproof Emergency Failsafe Lighting
Industrial Cord Reels and Tool Taps
Industrial Work Area Heaters
Machine Vision Lights
Megatower™
QC Series Industrial Portable Lighting - Quick Change Mount
Rig Lights
Stadium lights
String Lights and Temporary Light Stringers
Tank Cleaning Lights
Three Phase Motor Soft Starters
Vapor Proof LED Lights
Variable Frequency Drives (VFDs)
Vehicle Mounting Plates
Workboat Light Fixtures & Lighting Equipment
Color Changing LED RGB Lighting
Explosion Proof Cord Reels
GOLIGHT Spotlights
Larson FUTURE - Lease Lighting
Remote Area Lighting and Scene Lights
Utility Bucket Mount, Receiver Hitch & Trailer Mount Lighting
Butane and Solvent Extraction Room Lighting and Equipment
DC to DC Transformers and Power Supplies
Explosion Proof Fans & Blowers
Explosion Proof Paint Spray Booth Approved Lights
Explosion Proof String Lights
Explosion Proof Switchgear & Controls
Fleet Service Lights and Lighting Equipment
Industrial Equipment Trailers
Industrial Handlamps & Droplights
ISO 14644/FS-209E Clean Room Lighting
LED Blasting Lights
Night Time Fishing Lights
Portable AC Power Supply Units
Portable Power Distribution Panels
Power Distribution Panels with KVA Transformers
Self-Contained Lighting
Service Pit Lighting
Solar Generators & Solar Powered Lighting
Agricultural Farm Equipment Lighting & Beacons
Explosion Proof Cameras & Surveillance Systems
Explosion Proof Emergency Lights
Explosion Proof Heaters
Garage & Gas Station Canopy Lights
LED Grow Lights
LED Lights
NDT Ultraviolet Lights
Portable Hazardous Location Lighting
Radio Communication Towers and Equipment
Salt Water Processing Equipment
Shelter & Tent Lighting
Thermal Monitoring Cameras and Systems
48V LED Equipment Lights
ATEX Rated Explosion Proof Lights
Automotive Lighting
Class Rated Signals, Alarms, and Systems
Hazardous Location Area Lights and Portable Lighting
HID Equipment Lights
Hot Work Permit Lighting and Equipment
Hunting Lights
Industrial lasers
Industrial Transformers
Light Towers
Outdoor Lighting
Remote Security and Surveillance Systems
Temporary Construction Lights
Vehicle Mounted Spotlights
Equipment & Heavy Machinery LED Light Package Fitouts
Phase Converters - Single to Three Phase
Marine Shore Power Cords and Equipment
24 Volt Military Lights
Disaster Relief / First Responders / Search & Rescue Lighting
Plastic Handcuff Key
110/120 Volt Flood Lights
Post Mount Spotlights
Magnetic Work Lights
Crank-up Light Masts
**********    
Intrinsically Safe Lights
Military Flashlights
LED Waterproof Lanterns
Work Area Lights
12 Volt Flood Lights
**********    
**********    
Boat Spotlights
New Boat Lights
HID Boat Lights
Boat Dock Lights
**********    
Remote Control Lights
Control Lights
Tow Lights
Magnetic Control Lights
**********    
NEW Lights and New Products
Evaporative Coolers
Police Equipment
AC/DC Transformers
Power Supplies
**********    
Military Spotlights 24V
Infrared Filters, Covert Covers, and Blackout IR Lenses
Military Equipment
Ultralife Batteries
Remote Control Pan Tilt Base
**********    
Larson Electronics Spotlights
Larson Electronics Parts
Replacement Lamps
Cords - Brackets
Portable Wheeled Generators
Non-Hazardous Location Extension Cords / Plugs / Outlets
**********    
HID Work Lights
HID Dive Lights
HID Off Road Lights
Acro Lights HID Lights
Halogen Lights
**********    
Acro Light Flashlight
Xenon HID Flashlights
Powerlight Flashlight
HID Flashlights
Xenon Flashlights
**********    
LED Status Lights
Forklift Lights
Tractor Lights
HID Post Mount Lights
Roof Mount Lights
Post Mount Light parts
**********    
Flashlight Holder
Magnet Spotlight Base
Tripods-Magnetic Base
**********    
Recharging Spotlights
Fire Rescue Lights
LED Street Lights
Utility Lights
**********    
Hazard Lights
Strobe Lights - Battery Operated
Strobes & Beacons
Strobe Light Bars
**********    
Headlights - Headlamps - Hard Hat Lights
Flashlights
**********    
Suction Mount Lights
Magnetic Spotlights
12/24 Volt Spotlights
Gifts For Men
**********    
**********    
New 12 / 24 Volt Lights
Explosion Proof Accessories and Replacement Parts
Explosion Proof Lighting
Explosion Proof Hand Lamps (Drop Lights)
Explosion Proof Lights - Stand/Dolly
Explosion Proof Tank Lights
Explosion Proof Phones and Intercoms
Explosion Proof Extension Cords
Black Friday & Cyber Monday Specials
Crane Lights
Explosion Proof Light Rentals
General Light Rentals
Light Tower and Light Plant Rentals
Power Distribution Rentals
**********    
Power Plant Lighting
Refinery lights
Environmental Services Lights
Aerospace Lights
Chemical Plant Lights
Food Grade Safe Lights
Film and Entertainment Lights
Handheld Meters and Devices
Waste Water Treatment Lights
Mining Lights
Ship Yard Lights
Work Site Lighting
         

   
09/12/17 Roadside Lighting Systems and DOT Recommendations for Work Zone Illumination

Article - September 12, 2017 By LarsonElectronics.com

640W LED Area Light Tower - 7' to 12' - Balloon Light Alternative -50' 16/3 SOOW Cord -Quadpod Tower

Roadside Lighting Systems and DOT Recommendations for Work Zone Illumination

According to the Federal Highway Administration, there are over 4 million miles of roads in the US, with 2.6 million miles paved and more than 1.3 million miles unpaved. With virtually “endless” roadways available in the country, maintenance must be conducted around the clock to ensure driver and pedestrian safety.

These projects are carried out in designated, US Department of Transportation-recognized (DOT) work zones. Such locations are defined as sections of roads or highways wherein construction, repair or maintenance is conducted. Work zones are marked end-to-end using signs, cones, lights, vehicles and beacons.

To prevent delays and traffic during peak periods, projects that are facilitated in work zones are typically conducted at night. As a result, rugged luminaries are needed to keep the area lit up, allowing operators to perform their jobs properly and providing drivers plenty of time to detect, react to and avoid the busy work site.


Work Zones and NCHRP Illumination Levels

When roadside lighting systems are deployed in the work zone, operators are required to adhere to specific illumination standards, governed by the DOT, the National Cooperative Highway Research Program (NCHRP), the Illuminating Engineering Society (IES) and local laws (more on this later).

The NCHRP, through Report 498: Illumination Guidelines for Nighttime Highway Work, establishes the following categories and illumination levels for work zones:

• Level I: 54 lux or 5 foot-candles (examples- general tasks, flagging stations and road closures). Level I is recommended for work involving low accuracy and low risk, such as tasks completed using slow-moving machines or devices.

• Level II: 108 lux or 10 foot-candles (examples- milling, paving, illumination around heavy-duty equipment and concrete work). Level II is ideal for work zone tasks that are complex and require moderate accuracy.

• Level III: 215 lux or 20 foot-candles (examples- pothole repair, patching, installation of electrical units and signs). Level III is reserved for extremely difficult, risky or hazardous tasks around the temporary site.


Special State DOT Lighting Specifications

The NCHRP recommendations above can be used as general illumination guidelines for work zones. However, as mentioned earlier, local laws (on a statewide level) should also be taken into consideration for the application of roadside lighting systems. This is because states have their own set of local DOT regulations that have been specifically tailored for the respective location. For example, the Minnesota DOT (MnDOT) handbook contains numerous requirements for addressing snowy or icy work zones. Such standards are uncommon in Nevada DOT (NDOT) documentation.

Below are examples of local DOT guidelines:

Texas DOT (TxDOT): Requires the observation of guidelines in Transportation Code 547.105 (Maintenance and Service Equipment Lighting) and 547.305 (Restrictions on Use of Lights) for warning lights in work zones, in addition to general DOT recommendations.

Georgia DOT: 20 foot-candles/50,000 lumens (minimum) for light towers during nighttime operations.

Florida DOT: 5 foot-candles during general tasks and inspections in work zones.

New Jersey DOT: 100 lux/5:1 uniformity ratio (or less) for general tasks, 200 lux for complex work (hole filling, sealing or cutting).

Rhode Island DOT: 250-watt metal halide lamps must be used when operating rollers and pavers.


Light Towers for Work Zone Illumination

Roadside work zones use heavy-duty lights for illumination during operation. For illuminating large sections of the site, light towers are typically deployed in the area. These units are designed to hold lamps in elevated positions, so that they do not get in the way of ongoing work on the ground. Moreover, with the light beam coming from an elevated source, obstruction is greatly minimized. Light mast sizes and capacities vary, depending on the size of the work zone, type of repair work and illuminative requirements of the project. The units can be mounted on trailers for seamless deployment or equipped with generators (fuel or solar), for powering portable equipment in remote work zones without access to mainstream power.

An example of a light tower that is suitable for work zones is the WCDE-4-MHL from Larson Electronics. Capable of reaching 25 feet, the light mast is equipped with four, 1,000-watt metal halide lamps and a 7,500 kW generator. The entire assembly is mounted on a trailer, which comes with DOT-approved tail, side, break and directional lights. Larson Electronics also offers an LED version of the light tower. The variant, under WCDE-4-8X160WSA-LED, provides long lifespans (up to 50,000+ hours), energy efficient operation and rough handling. These units can be rented for temporary projects or fully purchased, making it a great addition to work zone lighting systems.

It is best practice to ensure that lights at work zones are never pointed at traffic, pedestrians or directly in the eyes of operators. To prevent accidental blinding, work-zone luminaries are always pointed downwards. For light towers, elevated lamp heads should never be positioned greater than 30 degrees, to avoid blinding, the creation of glare or light trespass (light spillage on private property). Previously, balloon light towers were favored by work-zone operators, for their ability to illuminate the area, with minimal glare and blinding. The ball-shaped lamp head is diffused to reduce unwanted glare, while supported by a pole, which can be mounted on pavers, trucks and towers.


Balloon Light Alternatives

Unfortunately, balloon lights come with numerous drawbacks and risks, when used in rough environments. For the reduction of glare, the luminary relies on fabric. This component is prone to all kinds of stress that can limit its effectiveness. Due to its weight-reducing features, the fabric can cause the balloon light to float away, when exposed to extreme winds. Hence, the fixture must be taken down during harsh weather.

As a translucent material, getting mud or stains on the fabric will decrease its illuminative properties. So while the units can prevent blinding, a huge disadvantage is their limited coverage. From a cost perspective and for budget-tight projects, this is a concern, as more lights are needed to keep the work zone illuminated.

A superior and more practical option is the WAL-QP-4X48.160W-LED-50 from Larson Electronics. The balloon light tower alternative uses four, high-powered LED lamps in an ‘X’ configuration for illumination. The fixtures are diffused and pointed downwards to prevent blinding. Unlike balloon light masts, the units do not require fabric during light diffusion. The LED lamps boast IP65 waterproof protection and are mounted on a quadpod for elevated positioning between 7 to 12 feet. For operators who want to use their own tower, this luminary is also offered without a supporting mast (LED light heads only) under LLP-LT-4X48.160W-LED.





Related Categories/Products
Category/Product (click on link below for more information)
LED Light Towers
LED Work Lights
LXLITE Light Towers
Megatower™
Skid Mounted Light Plants and Light Towers
Solar Power Generators with Light Towers
Articles - Work Area
Articles - Towers & High Mast
LED Strobe Lights
Tripod Mounted Quartz Halogen Light Towers
50' Telescoping Megatower® w/ (16) 1500W MH Lights - 13-50' Fold Over Five Stage Light Plant - 360°
30 Foot Horizontal Light Mast - (4) 400 Watt LED Lights - Electric Winch - Weighted Skid Base
Subzero Cold Weather Package for Larson Electronics Megatower Diesel Gensets
600 Watt Manual Crank LED Light Plant - Skid Mount Five Stage Mast - Extends to 30' - Daisy Chain
580 Watt Solar Light Tower - 30' Light Tower - 7.5' Trailer - (4) 60 Watt LED Lamps
3000 Watt High Intensity LED Light Plant - 2000LB Skid Mount Five Stage 30ft Electric Mast
Portable Solar Light Tower - 30' Mast - 7.5' Trailer - (1) Junction Box - No Batteries
Solar LED Explosion Proof Light System - Class I, II, Div 1 & 2 - (2) 265-watt Solar Panels
240W Battery-Powered LED Light Tower - 4kWh Capacity, 16hr Runtime - 7'-12' Light Mast, 21600 Lumens
16000W Chandelier Cube MH Light Plant - (16) 1000W MH Fixtures - Single PH - Adjustable Assemblies
*RENTAL* 77' Hydraulic Megatower® on 33' Trailer - (20) 500W LED Fixtures - 20KW Genset w/ 110G Tank
Home | Contact Us | Return Policy | Privacy Policy | Security Policy | Copyright © 2006-2018. All Rights Reserved.