‘Phantom Capacity’ in US-Mexico Trucking: How Security and Compliance Are Reshaping Freight Markets
The U.S.-Mexico trucking market is tightening in 2026—but not in the way traditional freight metrics suggest. While spot rates and tender rejections paint a picture of loose capacity, a deeper constraint is emerging: phantom capacity. This phenomenon, described by Uber Freight executives, reveals a growing gap between theoretical truck availability and the usable, compliant capacity that can reliably move freight across the border.
At the heart of the issue are stricter security protocols, compliance requirements, and a shrinking pool of vetted carriers. The result? A supply-driven tightening that’s reshaping cross-border logistics, even as demand remains stable. Here’s what shippers, carriers, and industry observers need to know.
What Is Phantom Capacity?
Phantom capacity refers to the discrepancy between the number of trucks technically available in the market and those that can actually meet the security, compliance, and operational standards required for cross-border freight. According to Zeid Houssami, Senior Vice President overseeing Uber Freight’s cross-border business, this gap is widening due to three key factors:
- Security Requirements: Enhanced vetting for drivers and carriers, particularly in high-risk corridors, has reduced the pool of eligible trucks.
- Compliance Standards: Stricter adherence to regulatory protocols—including customs, insurance, and safety certifications—has disqualified non-compliant operators.
- Corridor Concentration: Freight volumes are increasingly concentrated along specific industrial routes, creating bottlenecks where compliant capacity is scarce.
“Demand hasn’t really shifted. It’s really been more supply constraints, due to security primarily, and then as well just a consolidation of volumes on specific corridors,” Houssami told FreightWaves in an interview. The result is a market where headline metrics—like spot rates—may suggest ample capacity, but shippers struggle to secure reliable, vetted carriers for critical lanes.
Why Traditional Metrics Are Misleading
In early 2026, the U.S.-Mexico trucking market entered what Houssami calls a “supply-driven” phase. Unlike demand-driven cycles—where surges in freight volume outpace capacity—this tightening is rooted in structural constraints. Key indicators highlight the disconnect:
Spot Rates vs. Usable Capacity
Spot rates, a common barometer for market tightness, have remained relatively stable. However, these rates don’t account for the quality of capacity. A truck may be available on paper, but if it lacks the necessary security clearances or compliance certifications, it’s effectively unusable for cross-border shipments.
Tender Rejections and Acceptance Gaps
SONAR’s Outbound Tender Volume Index (OTVI) for Mexico shows volumes holding steady or slightly elevated through April 2026. Yet, tender acceptance rates are declining—a sign that carriers are struggling to match available freight with compliant trucks. This gap is the clearest signal of phantom capacity: freight is on the board, but the right truck isn’t available.
“There’s not really a driver shortage—it’s more so it’s a compliant driver shortage,” Houssami explained. The issue isn’t the number of drivers; it’s the number of drivers who meet the heightened standards for cross-border operations.
The Northbound Challenge: Imbalance and Deadheading
The U.S.-Mexico freight market is inherently imbalanced. Northbound demand—freight moving from Mexico into the U.S.—runs two to three times higher than southbound volumes. This imbalance forces carriers to deadhead (move empty trucks) back into Mexico, further tightening U.S.-bound coverage.
For shippers, this dynamic creates a double challenge:
- Reduced Availability: Fewer compliant trucks are available for northbound loads, as carriers prioritize high-demand lanes.
- Higher Costs: The need to reposition empty trucks increases operational costs, which are often passed on to shippers in the form of higher rates or surcharges.
Houssami noted that this imbalance is exacerbating the phantom capacity issue, particularly in key industrial corridors like Laredo, El Paso, and Otay Mesa, where freight volumes are concentrated.
How Shippers Can Navigate the Tightening Market
For shippers reliant on cross-border freight, the tightening market demands a strategic approach. Here are actionable steps to mitigate risks and secure capacity:
1. Diversify Carrier Networks
Relying on a small pool of carriers increases vulnerability to phantom capacity. Shippers should:
- Expand their network of vetted, compliant carriers.
- Prioritize partnerships with carriers that have proven security and compliance track records.
- Leverage digital freight platforms (like Uber Freight) to access a broader pool of pre-vetted capacity.
2. Optimize Lane Strategies
Given the concentration of freight along specific corridors, shippers should:
- Analyze their lane patterns to identify high-risk bottlenecks.
- Explore alternative routes or modes (e.g., intermodal rail) to bypass congested lanes.
- Work with logistics providers to secure dedicated capacity for critical shipments.
3. Invest in Compliance and Security
Shippers can reduce their exposure to phantom capacity by:
- Ensuring their own compliance with customs and security protocols.
- Partnering with carriers that invest in driver training and security certifications.
- Adopting technology solutions (e.g., real-time tracking, digital documentation) to streamline cross-border operations.
4. Leverage Data and Market Intelligence
In a market where traditional metrics are misleading, data-driven insights are critical. Shippers should:
- Use freight analytics tools to monitor tender acceptance rates, spot rates, and carrier performance.
- Track security and compliance trends to anticipate future capacity constraints.
- Collaborate with logistics providers that offer real-time visibility into market conditions.
What’s Next for the U.S.-Mexico Trucking Market?
The phantom capacity phenomenon is unlikely to resolve quickly. As long as security and compliance remain top priorities for cross-border freight, the gap between theoretical and usable capacity will persist. However, several trends could shape the market’s evolution in the coming months:
1. Increased Carrier Consolidation
Smaller, non-compliant carriers may struggle to compete, leading to further consolidation in the market. This could reduce the overall number of available trucks while increasing the share of compliant, vetted capacity.
2. Technology as a Differentiator
Carriers that invest in technology—such as AI-driven load matching, real-time tracking, and digital compliance tools—will gain a competitive edge. Shippers may increasingly prioritize tech-enabled carriers to mitigate phantom capacity risks.
3. Regulatory and Security Shifts
Any changes to cross-border security protocols or compliance requirements could further tighten or loosen capacity. Shippers and carriers should stay attuned to regulatory developments, particularly in areas like customs enforcement and driver vetting.
4. Potential for Demand Shifts
While demand has remained stable in early 2026, macroeconomic factors—such as trade policy changes or shifts in manufacturing—could alter freight volumes. A sudden surge in demand would exacerbate the phantom capacity issue, while a downturn could provide temporary relief.
Frequently Asked Questions
What is phantom capacity in trucking?
Phantom capacity refers to the gap between the number of trucks theoretically available in the market and those that can actually meet the security, compliance, and operational standards required for specific freight lanes. In the U.S.-Mexico market, this gap is widening due to stricter vetting and concentrated freight volumes.
Why are traditional freight metrics misleading in this market?
Traditional metrics like spot rates and tender rejections don’t account for the quality of capacity. A truck may be available on paper, but if it lacks the necessary security clearances or compliance certifications, it’s effectively unusable for cross-border shipments. This creates a disconnect between what the data suggests and the reality on the ground.
How can shippers secure reliable capacity in a tightening market?
Shippers can mitigate risks by diversifying their carrier networks, optimizing lane strategies, investing in compliance and security, and leveraging data-driven market intelligence. Partnering with logistics providers that offer access to vetted capacity and real-time visibility can also support.
What role does technology play in addressing phantom capacity?
Technology can help bridge the gap between theoretical and usable capacity by:
- Enabling real-time tracking and visibility into carrier performance.
- Automating compliance checks and documentation.
- Using AI-driven tools to match freight with vetted, compliant carriers.
Will the U.S.-Mexico trucking market continue to tighten?
The market is likely to remain tight as long as security and compliance requirements are prioritized. However, trends like carrier consolidation, technological adoption, and potential regulatory shifts could influence the trajectory. Shippers and carriers should prepare for ongoing volatility and invest in strategies to navigate the constraints.
Key Takeaways
- Phantom capacity is reshaping the U.S.-Mexico trucking market. A growing gap between theoretical and usable capacity is tightening the market, even as demand remains stable.
- Security and compliance are the primary drivers. Stricter vetting, regulatory protocols, and concentrated freight volumes are reducing the pool of compliant, vetted carriers.
- Traditional metrics are misleading. Spot rates and tender rejections don’t account for the quality of capacity, creating a false sense of market looseness.
- Northbound freight faces unique challenges. Imbalanced demand (two to three times higher northbound than southbound) forces carriers to deadhead equipment, further tightening U.S.-bound coverage.
- Shippers must adapt strategically. Diversifying carrier networks, optimizing lanes, investing in compliance, and leveraging data can help mitigate risks.
- The market is unlikely to loosen soon. As long as security and compliance remain priorities, phantom capacity will persist, requiring ongoing adaptation from shippers and carriers.
The Road Ahead
The U.S.-Mexico trucking market is at a crossroads. Phantom capacity is not just a temporary blip—it’s a structural shift driven by evolving security and compliance standards. For shippers, the message is clear: relying on traditional metrics and outdated strategies is no longer sufficient. Success in this market will require a proactive approach, grounded in data, technology, and partnerships with vetted, compliant carriers.
As the market continues to tighten, those who adapt will thrive. Those who don’t risk being left behind, stranded in the gap between what the data suggests and what the market can actually deliver.