Client: A regional infrastructure modernization authority contracted with HNM Systems to provide technical design and mechanical engineering support across transit and telecommunications upgrade programs.
Industry: Transit and Telecommunications
Services Provided: Mechanical Design, Infrastructure Engineering, and Compliance Integration
Business Need
As part of a multi-year initiative to modernize transit stations and telecom facilities, the client needed to standardize and accelerate the design of physical infrastructure systems supporting next-generation connectivity.
Existing processes were highly manual and inconsistent, leading to design rework, delayed approvals, and inefficiencies in field installation. The authority required expert mechanical design support to produce scalable, modular solutions that met strict safety, regulatory, and cybersecurity requirements.
The challenge went beyond traditional mechanical design—it required integrating secure enclosures and power systems into environments where transit, IT, and telecommunications converged. Every component, from cable routing to cabinet access, had to balance efficiency, thermal performance, and physical security.
Our Approach
HNM Systems deployed a team of specialized Mechanical Designers proficient in AutoCAD, MicroStation, SolidWorks, and Revit to lead a full-cycle modernization effort. The engagement began with detailed field surveys to validate existing layouts, confirm environmental conditions, and evaluate installation constraints across multiple transit facilities.
With that foundation, HNM Systems developed modular design kits and reusable templates that standardized cabinet and power configurations across more than 20 sites. Each design incorporated heat-efficient layouts, accessible cable routing, and scalable enclosure models that reduced the need for redesign with every deployment.
To accelerate timelines, the team introduced a library of pre-approved mechanical components—each aligned with agency standards and regulatory codes. This approach enabled faster submittals, minimized revision cycles, and significantly improved first-round approval rates.
HNM Systems also integrated procurement alignment early in the process, linking Bills of Materials directly to supply systems to streamline ordering and logistics. The result was a unified design-to-field process that enhanced predictability, documentation quality, and installation accuracy.
Security and Compliance Integration
Because the client’s infrastructure operated in public environments, physical security was a central design requirement. HNM Systems embedded cybersecurity principles directly into mechanical design, ensuring every cabinet and enclosure supported secure access and monitoring.
Designs incorporated tamper-detection hardware, role-based access controls, and mechanical interfaces aligned with customer identity and access management (CIAM) policies. These features supported broader organizational compliance frameworks by protecting sensitive telecom components at physical access points.
The design process followed NIST-aligned best practices, ensuring the infrastructure itself contributed to the client’s overall cybersecurity posture. Collaboration between HNM’s mechanical design engineers, IT security teams, and public agencies ensured alignment between physical and digital security measures from the earliest design stages.
Delivery and Collaboration
Success required more than technical execution—it demanded coordination across diverse stakeholders, including public agencies, subcontractors, and compliance teams. HNM Systems established structured communication and review workflows that kept designs consistent with DOT and transit authority standards.
By leveraging pre-approved design kits and a unified documentation process, submittal turnaround times were significantly reduced, and ambiguity during field installation was nearly eliminated. The combination of modular templates and integrated regulatory crosswalks simplified the approval process while maintaining the rigor required for public infrastructure projects.
Results
The engagement achieved a 30 percent reduction in design cycle time, driven by modular templates and agency pre-approvals. Field installation speed improved by 25 percent, and first-round submittal approvals increased by 40 percent—substantially reducing redesign and regulatory backlog.
These efficiencies directly translated into faster deployments and lower total project costs. The designs also strengthened the client’s physical security posture, aligning mechanical and cybersecurity controls to ensure data integrity and operational safety across every facility.
Through standardization and secure design integration, HNM Systems enabled the client to scale transit and telecom infrastructure more cost-effectively, with higher quality and consistent compliance across all project phases.
Differentiators
This engagement highlighted HNM Systems’ ability to deliver complex infrastructure design programs requiring both precision engineering and cross-domain coordination. The team demonstrated leadership in mechanical design for secure, scalable telecom and transit environments; implemented a rapid deployment model based on pre-approved kits; and successfully integrated cybersecurity principles into physical infrastructure.
By uniting mechanical innovation, compliance alignment, and security integration, HNM Systems delivered a repeatable model for accelerating modernization initiatives across regulated, multi-stakeholder environments.
Download the Full Case Study
Learn how HNM Systems helped a regional modernization authority reduce design cycles, streamline approvals, and deliver secure, scalable infrastructure at speed.
Download the Case Study:
Modular Design for Transit and Telecom Infrastructure
