HMMH is an international leader in environmental and transportation planning, specializing in a wide range of areas such as noise and vibration control, air quality analysis, airport and airspace planning, and sustainable energy solutions. With a strong track record of over 40 years, HMMH offers innovative solutions to address environmental challenges in various markets worldwide. In the aviation sector, HMMH partners with clients to provide trusted expertise in tackling complex challenges.

They have completed numerous successful consulting and research projects, making them a reliable choice. For rail and transit systems, HMMH has conducted noise and vibration assessments and provided mitigation recommendations for over three decades, ensuring sustainable solutions for keeping cities moving efficiently. HMMH also helps clients engineer cleaner and quieter highways, offering creative solutions even for congested transportation corridors.

Federal programs have relied on HMMH since 1981 for expert modeling, analyses, and advice. With a dedicated commitment to technical excellence, collaboration, and innovation, HMMH is your go-to partner for a better and more sustainable future