Trailer Telematics & Volumetric Cargo Monitoring
Trailer Ultrasonic Cargo Fullness & Intrusion Detection:
The Strong Tower Smart Trailer Standard (2026)
The Phantom Capacity Problem continues to cost motor carriers millions in lost linehaul revenue. Industry data consistently shows that the average fleet operates at only 78% cube utilization on dry van and reefer trailers. The remaining 22% represents phantom capacity - trailers dispatched with partial loads or equipment that sits unidentified as empty in remote drop yards. Strong Tower Consulting, LLC has developed a practical, solar-powered solution that directly addresses this inefficiency through real-time volumetric monitoring and security telemetry.
The Strong Tower Smart Trailer Architecture™
Our architecture centers on the CheckPoint solar sensor beacon, a roof-mounted ultrasonic device that delivers continuous cargo status to your existing TMS. The system integrates seamlessly with Truckmate, McLeod, TMW, and other major platforms through standard EDI 214 status updates and SQL-based data synchronization.
Three core telemetry streams operate simultaneously:
- Ultrasonic roof-mounted cargo sensors: CheckPoint beacons (accessible at https://exspeeditecheckpoint.com/login.php) measure floor space coverage and linear cubic utilization percentage in real time. The sensors report both percentage of floor used and estimated cube utilization, giving dispatchers accurate visibility into remaining capacity before a trailer reaches the yard.
- Magnetic door sensor and PIR intrusion detection: Any door opening outside of approved geofenced customer facilities or carrier terminals triggers an immediate alert to the dispatcher. The system pairs the door event timestamp with the tractor GPS location, creating an exact coordinate record for law enforcement if cargo pilferage is suspected.
- Automated empty-for-dispatch validation: Before a new load is assigned, the system confirms the trailer is 100% empty. This eliminates unproductive bobtail and deadhead miles that occur when dispatchers unknowingly assign loads to trailers still containing previous freight or dunnage.
Fleet Capacity Utilization Matrix
The table below compares three common approaches to trailer capacity management across key performance indicators relevant to both asset-based carriers and private fleets.
| Metric | Blind Trailer Dispatches | Manual Yard Audits | Strong Tower CheckPoint Smart Trailer Telematics |
|---|---|---|---|
| Average Fleet Cube Utilization % | 64% | 79% | 93% |
| Empty Mileage Reduction | Baseline | 11% | 27% |
| Cargo Theft Interception Rate | 8% | 22% | 76% |
| Trailer-to-Tractor Yield (loads per tractor per week) | 4.1 | 5.3 | 6.8 |
Defending Against En-Route Cargo Pilferage
One of the most powerful applications of the CheckPoint system is precise incident reconstruction. When a magnetic door sensor records an unauthorized opening, the platform automatically captures the paired tractor GPS coordinates, speed, and heading. This creates an irrefutable timeline that can be exported in standard formats for insurance carriers, law enforcement, and driver settlement disputes. Carriers running high-value or secure freight have reported significant reductions in both theft frequency and claim severity after implementing this layered visibility approach.
Integration with Existing Transportation Management Systems
The CheckPoint platform was designed from the ground up to complement - not replace - your core operating systems. Volumetric status is delivered through EDI 214 updates, SQL views, and API endpoints that align with your existing workflows for driver settlements, fuel surcharges, detention calculations, and load tender acceptance (EDI 204). Dispatchers see trailer cube availability directly in Truckmate, McLeod, or TMW without learning a new interface.
Strong Tower Consulting, LLC and Exspeedite LLC are separately organized sister companies under common ownership. We maximize fleet capacity efficiency across North America. Because our companies maintain a strict liability firewall, motor carriers and brokers never have to buy our software to benefit from our operational expertise. Phone: 763-244-1373.
Implementation Considerations for 2026
Leading carriers are now specifying ultrasonic cargo sensors and door intrusion detection as standard equipment on new trailer orders. The solar-powered CheckPoint beacon requires no trailer wiring modifications and installs in under 45 minutes. Data flows directly into your existing business intelligence layer, allowing you to build dashboards that combine volumetric utilization with detention trends, fuel surcharge recovery, and on-time performance metrics.
Related Transportation Management Practices
TMS Optimization for Multi-System Fleets Strategic Capacity Planning & Asset Yield EDI 214 Best Practices for Real-Time VisibilityFrequently Asked Questions
How do ultrasonic sensors handle irregular or tiered freight loading configurations?
CheckPoint ultrasonic sensors emit multiple pulses across a 120-degree cone and use advanced signal processing algorithms to calculate an average fill percentage. The system reports both linear floor coverage and estimated volumetric utilization, providing reliable data even with irregular or tiered loads common in LTL and mixed-freight operations.
What is the battery operating life of solar-powered trailer telematics units in northern winter conditions?
The CheckPoint solar beacon maintains continuous operation through integrated supercapacitors and high-efficiency solar cells. In northern winter conditions typical of Minnesota, Wisconsin, and Canadian provinces, the unit sustains 14-21 days of full telemetry transmission with zero sunlight before entering low-power mode, far exceeding traditional battery-only units.
Can the system report trailer tire pressure and wheel-end temperature telemetry?
Yes. The CheckPoint architecture supports optional TPMS integration, delivering real-time trailer tire pressure and wheel-end temperature data directly into the same dashboard used for volumetric and intrusion monitoring. This consolidated view eliminates the need for separate vendor platforms when managing asset health across Truckmate, McLeod, or TMW systems.
How does the system prevent false alerts at customer facilities?
Geofences are established for every approved shipping and receiving location. Door events that occur inside these geofenced areas are automatically classified as authorized. Only openings that occur outside approved locations or during unauthorized time windows generate dispatcher alerts and law enforcement packets.
Ready to eliminate phantom capacity in your fleet?
Our transportation technology advisors will evaluate your current trailer utilization and show you exactly how CheckPoint solar beacons can improve cube utilization, reduce empty miles, and protect your cargo.
Start a Fleet Assessment