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Do you need a Highway Lighting Plan?

Highway Lighting Plan

What Is Highway Lighting?

Highway Lights are mounted on top of tall mast poles. The lighting poles are typically 60-120 feet tall. A single lighting pole may have 4 to 12 fixtures mounted to it.

Many highway poles are equipped with a drop lighting structure. This allows the lights to drop to the base in order to perform maintenance. 

Illuminating large areas isn't easy and highway lights are very powerful lights. Until LED, most highway lights featured high pressure sodium bulbs. But these lights have high maintenance costs (because of their short lifespans). They consume a lot of electricity and take a long time to warm up and cool down.

This is why LED Highway Mast Lights were such a welcome change. They completely transformed the way highway lights brighten up roadways. 

 

High Mast Picture

Converting your DOT Highway Lights to LED?

A great opportunity for DOT's to save money is to convert HID High Mast lights to LED. Freeways and interchanges are lit with High Mast lights. A pole with 12 1000W HID lights consumes 12,000 watts. The same pole converted to 450W LED Fixtures consumes 5400 watts, a reduction of 6600 watts, a 55% reduction.

That means you can convert 2 poles to LED and it will stay consume less energy than 1 HID pole.

Quality of light comparing LED to High Pressure Sodium HPS improves from a CRI of 25 to a CRI of 70. This creates a safer driving experience. At 20,000 hours the HID bulbs will need replacement. The LEDs are still working perfectly, and almost as bright as the installation date.

Here are some quick savings scenarios. This walks through conversion savings when switching to LED. In each of these scenarios, we will assume the following:

Cost of electricity: .12 kw/h
Hours of operation: 12 hours a night
Number of days run each year: 365

4 Lights Per Pole

 

Replacing your 400W Metal Halide with 100W LEDs  - 4 lights per pole

 

Energy reduction is reduced by 350 Watts per fixture.

Include an additional ballast draw of 55W per fixture.

Savings per pole per year after LED conversion:  

 

$750.00+

6 Lights Per Pole

 

Replacing  your 1000W Metal Halide with 400W LED High Mast Fixtures

 

Energy reduction is reduced by 750 Watts per fixture.

Include an additional ballast draw of 150W per fixture.

Savings per pole per year after LED conversion:

 

$2365.20

12 Lights Per Pole

 

Replacing your 1000W Metal Halide with 400W LED High Mast Fixtures

 

Energy reduction is reduced by 750 Watts per fixture.

Include an additional ballast draw of 150W per fixture.

Savings per pole per year after LED conversion:

 

$4730.40

Last Updated: 09/25/2020
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