HOS Exemption: Mainline Services Seeks Relief for Rail Clearance

FMCSA Requests Comments on Mainline Services HOS Exemption

The Federal Motor Carrier Safety Administration (FMCSA) has published a notice requesting public comment on an application from Mainline Services, LLC for an exemption from certain hours-of-service (HOS) provisions. The exemption would apply to drivers transporting equipment used to clear derailed or disabled trains or debris blocking rail lines. This regulatory development could have significant implications for CDL drivers and carriers involved in emergency rail clearance operations.

What the Exemption Covers

Mainline Services seeks relief from specific HOS rules to allow its drivers to operate beyond standard limits when responding to rail emergencies. The company argues that rigid HOS compliance can delay critical equipment delivery, potentially exacerbating rail disruptions. The FMCSA is evaluating whether the exemption would maintain safety while improving response times.

Why This Matters for CDL Drivers

For CDL drivers, HOS exemptions are a double-edged sword. While they can provide flexibility during emergencies, they also raise concerns about fatigue and safety. The FMCSA’s decision will set a precedent for how emergency rail clearance operations are regulated. Drivers should stay informed, as similar exemptions could be sought by other companies in the future.

Industry Context

This exemption comes amid ongoing regulatory debates. For example, the recent FMCSA Motus System Issues Delay Biennial Update Enforcement highlights challenges in HOS compliance technology. Meanwhile, the Highway Requires ELD Hookups for All Carriers Post-Montgomery rule underscores the industry’s shift toward stricter electronic logging.

How to Comment

The FMCSA is accepting public comments until July 30, 2026. Stakeholders—including drivers, carriers, and safety advocates—can submit feedback via the Federal eRulemaking Portal (Docket No. FMCSA-2026-0123). Your input can shape the final decision.

What Drivers Should Know

If granted, the exemption would allow Mainline Services drivers to exceed 11-hour driving limits and 14-hour on-duty limits during rail clearance emergencies. However, drivers must still comply with all other HOS rules and maintain accurate logs. The exemption does not waive ELD requirements.

Carrier Considerations

Carriers involved in emergency response should monitor this exemption closely. It could open opportunities for specialized contracts with rail companies. However, safety management plans must be robust to avoid violations. For more on fleet strategies, see Driver Retention: Top Fleets Share Their Secrets.

FAQ

Q: Will this exemption apply to all drivers?

A: No, it only applies to Mainline Services drivers transporting rail clearance equipment during emergencies.

Q: How long would the exemption last?

A: The FMCSA typically grants exemptions for up to five years, subject to renewal.

Q: Can other companies apply for similar exemptions?

A: Yes, any carrier can apply for an HOS exemption. The FMCSA evaluates each application on its merits.

Take Action

Whether you're a driver seeking flexible HOS options or a carrier exploring new markets, staying ahead of regulatory changes is key. Apply for a CDL job today to connect with top carriers offering competitive pay and modern equipment. For carriers, see our carrier pricing to access our network of 4,559+ drivers and 530,340+ FMCSA-verified carriers. With a 24-hour average match time and 95% driver satisfaction rate, LMDR helps you find the right fit fast.