heavy-duty chassis testing dynamometer rollers from HORIBA's VULCAN Dynamometer used for vehicle emissions testing in laboratory environment

Heavy-Duty Chassis Testing

Measure emissions through heavy-duty chassis testing under real-world conditions

As emissions regulations tighten and real-world compliance requirements increase, validating emissions at the full vehicle level has become more complex. Engine testing alone is no longer sufficient to capture how heavy-duty vehicles perform under real operating conditions.

Heavy-duty chassis testing addresses this challenge by enabling complete vehicle evaluation, including the interaction between the engine, drivetrain, aftertreatment system, and vehicle load. By replicating real-world driving conditions in a controlled environment, manufacturers can generate accurate, repeatable data needed for development, validation, and certification.


Real-World Emissions Measurement

Heavy-duty vehicle chassis testing enables accurate emissions measurement under simulated real-world driving conditions. By reproducing vehicle loads and transient cycles on a chassis dynamometer, engineers can evaluate performance with high repeatability.

This approach allows:

  • Measurement of regulated gases and particulates
  • Simulation of transient drive cycles and road loads
  • Correlation with on-road testing, including PEMS
  • Full-system evaluation across vehicle configurations

The result is reliable data that supports both engineering decisions and certification requirements. It also aligns with emissions testing workflows defined by global regulatory frameworks, including U.S. EPA, CARB, and UNECE standards.

Applications of Heavy-Duty Chassis Testing

Emissions Compliance

heavy-duty vehicle undergoing emissions compliance testing in chassis dynamometer laboratory an example of heavy duty chassis testing

Validate performance against global emissions standards

Durability & Aging Performance

heavy-duty chassis testing for durability and aging using truck on chassis dynamometer

Assess long-term emissions performance across extended testing

R&D and Calibration

heavy-duty chassis testing for R&D and calibration with engineer monitoring emissions data

Support development and optimization through precise testing

On-Road Correlation

heavy-duty chassis testing correlation with real-world driving conditions using on-road truck testing

Compare laboratory results with real-world driving conditions

Contact HORIBA to discuss your vehicle development and testing challenges.

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Integrated Testing Solutions

Combine measurement, automation, and dynamometer systems for accurate results

Effective heavy-duty chassis testing requires seamless integration of measurement and automation systems. HORIBA provides a complete solution ecosystem, including:


These systems ensure accurate, repeatable, and compliant testing across global standards.

Development and Certification

Enable efficient validation from development through regulatory approval

Heavy-duty chassis testing supports the full vehicle lifecycle, from early development through certification and production validation. HORIBA solutions are used by:

  • OEM development teams
  • Suppliers and integrators
  • Certification and regulatory bodies
  • Independent testing laboratories 


With integrated measurement and testing expertise, teams can accelerate development timelines while maintaining confidence in emissions performance.

Heavy-Duty Engine Testing

HORIBA also provides heavy-duty engine testing solutions for powertrain development, emissions measurement, and certification.

Learn More

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Explore solutions for light-duty chassis testing for complete vehicle validation.

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Frequently Asked Questions

Heavy-duty chassis testing measures vehicle emissions and performance from complete vehicles—such as trucks and buses—using a chassis dynamometer to simulate real-world driving conditions.

It enables accurate and repeatable measurement of regulated emissions—including NOx, CO2, particulate matter (PM), and particle number (PN)—while evaluating the interaction between the engine, drivetrain, and aftertreatment systems.

Heavy-duty engine testing evaluates emissions and performance from the engine alone using an engine dynamometer, while heavy-duty chassis testing measures emissions from the complete vehicle using a chassis dynamometer under simulated real-world conditions.

Heavy-duty chassis testing is important because it captures the interaction between the engine, drivetrain, and aftertreatment systems, enabling accurate measurement of regulated emissions such as NOx, CO₂, particulate matter (PM), and particle number (PN). This full-vehicle approach supports development, validation, and compliance with global emissions regulations.

Chassis testing measures vehicle emissions in a controlled laboratory environment using a dynamometer, while on-road testing evaluates performance under real driving conditions.

Chassis testing provides repeatable, high-precision measurement of regulated emissions such as NOx, CO₂, particulate matter (PM), and particle number (PN) to support development and certification.

On-road testing validates these results in real-world conditions, helping ensure compliance with evolving regulatory requirements such as real driving emissions (RDE).

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