Holloman High Speed Test Track is a U.S. Air Force facility in New Mexico used to test vehicle emissions and performance

Holloman Air Force Base, located near Alamogordo, New Mexico, operates a high-speed test track primarily for military and government vehicle testing. The track is a straight, paved runway designed to measure how vehicles perform at extreme speeds and under controlled conditions. Because emissions testing often requires vehicles to run at sustained high speeds, this facility serves as one of the locations where manufacturers and government agencies gather data on tailpipe emissions, fuel consumption, and engine behavior.

The track itself is roughly 7 miles long and sits on the base's grounds. It was originally built to support aircraft testing but has been adapted over decades to accommodate ground vehicle testing as well. The controlled environment — flat terrain, consistent surface, and isolated location — makes it possible to run repeatable tests where speed, temperature, and other variables can be measured precisely.

Key Takeaways

  • Holloman High Speed Test Track is a U.S. Air Force facility in New Mexico used for emissions and performance testing of vehicles at high speeds.
  • The track is approximately 7 miles long and provides a controlled environment where manufacturers can measure tailpipe emissions and fuel consumption consistently.
  • Testing at Holloman typically involves government agencies, military contractors, and vehicle manufacturers rather than individual vehicle owners.
  • Data collected at the track feeds into federal emissions standards and helps regulators understand how vehicles perform under real-world driving conditions.

Who uses Holloman for emissions testing

The U.S. Environmental Protection Agency (EPA), the Department of Defense, vehicle manufacturers, and military contractors use Holloman for emissions testing. The EPA uses data from high-speed test tracks to develop and validate emissions standards that explore to cars, trucks, and heavy-duty vehicles sold in the United States. The Department of Defense tests military vehicles — Humvees, transport trucks, and other fleet vehicles — to understand their emissions profiles and fuel efficiency.

Private manufacturers also rent time on the track or work with government agencies to test prototype vehicles. Because the track is on a military base, access is restricted and requires authorization. Individual vehicle owners do not use Holloman; it is exclusively for institutional testing.

What the testing measures

High-speed test tracks measure emissions by running vehicles at sustained speeds — often 55 mph, 65 mph, or higher — while collecting exhaust samples. The track's length allows vehicles to reach and maintain these speeds consistently, which is difficult to do on public roads or in laboratory settings. Technicians measure nitrogen oxides (NOx), particulate matter, carbon dioxide, and other pollutants that come out of the tailpipe.

The track also captures data on fuel consumption, engine temperature, transmission behavior, and how the vehicle responds to acceleration and deceleration. This real-world performance data is more reliable than laboratory dynamometer tests because the vehicle is actually moving and experiencing road friction, wind resistance, and the mechanical stresses of sustained high-speed driving.

How Holloman data shapes emissions standards

The EPA uses emissions data from facilities like Holloman to set the standards that manufacturers must meet. When the EPA proposes new tailpipe emissions limits — for example, stricter NOx standards for light-duty trucks — it relies partly on data showing what current vehicles actually emit at highway speeds. If a manufacturer claims a vehicle meets a standard, the EPA may test it at Holloman to verify the claim.

The data also informs the EPA's understanding of the gap between laboratory test results and real-world emissions. A vehicle may pass a controlled dynamometer test but emit more pollution on the highway. Testing at Holloman helps regulators account for that difference when they set standards.

The difference between Holloman testing and laboratory testing

Laboratory emissions tests use a dynamometer — a machine that simulates driving by spinning the vehicle's wheels while the car stays stationary. The dynamometer can replicate specific driving cycles, like the EPA's standard test procedure, but it cannot replicate all the variables of actual driving: wind resistance, road surface variation, temperature swings, and the mechanical wear that comes with real motion.

Holloman testing is conducted on an actual vehicle moving at actual speed on a real surface. The vehicle experiences genuine aerodynamic drag, real tire friction, and the thermal stresses of sustained high-speed operation. This makes the emissions data more representative of what happens when someone drives that vehicle on a highway. Both types of testing are used together: laboratory tests provide repeatable, standardized data; track tests provide real-world validation.

Access and location details

Holloman Air Force Base is located in Otero County, New Mexico, approximately 15 miles south of Alamogordo. The base is active military property, and the test track is not open to the public. Access requires authorization from the base and typically involves a formal agreement between the testing organization and the Department of Defense or the EPA.

If you work for a government agency, a vehicle manufacturer, or a contractor that needs emissions testing, your organization would contact Holloman's test operations office to inquire about availability and scheduling. The track operates year-round, though testing may be suspended during extreme weather or base-wide maintenance.

Why high-speed testing matters for emissions standards

Emissions standards are designed to limit pollution from vehicles across all driving conditions, including highway driving at sustained high speeds. A vehicle that meets emissions limits in the city may behave differently on the interstate. Testing at Holloman ensures that manufacturers cannot design vehicles that pass laboratory tests but fail to control emissions at highway speeds.

The data collected also helps the EPA understand trends in vehicle technology. As manufacturers adopt new engine designs, emission control systems, or fuel types, testing at Holloman reveals how these changes affect real-world emissions. This information feeds back into the next generation of standards and helps regulators stay ahead of technological change.

Frequently Asked Questions

Can I take my car to Holloman for emissions testing?

No. Holloman is a military facility used only for government and manufacturer testing. Individual vehicle owners cannot schedule testing there. If you need emissions testing for your vehicle, contact your state's Department of Environmental Quality or your local emissions testing center.

What is the test track used for besides emissions?

The track is also used for military vehicle performance testing, fuel efficiency studies, and durability testing. The Department of Defense uses it to evaluate how military vehicles perform under extreme conditions before they are deployed.

How long does a typical test take?

A single high-speed run may take 30 minutes to an hour, depending on the test protocol. However, a complete emissions test often involves multiple runs at different speeds and conditions, so a full testing session can span several hours or multiple days.

Are the test results public?

Some results are published in EPA reports and regulatory documents, especially when they are used to set or enforce emissions standards. Military testing results are typically classified or restricted. Manufacturer-sponsored testing results may be proprietary unless they are submitted to the EPA as part of a certification process.

Why is New Mexico chosen for this facility?

Holloman was selected because it offers a long, flat, isolated runway suitable for high-speed testing, and it is already a military installation with security infrastructure and technical support. The location also provides consistent weather for much of the year, which helps produce reliable, repeatable test data.