The transportation industry continues to see high-profile derailments traced to improperly seated corner castings on double-stack railcars. When a top-tier container's lower corner castings are not fully engaged in the pedestal twistlocks of the bottom-tier container or the railcar well itself, lateral forces at track speed can cause the load to shift, resulting in catastrophic consequences.
Strong Tower Consulting, LLC has developed the WellLock Architecture within the CheckPoint platform to eliminate this risk through continuous, sensor-driven verification and automated EDI messaging. Founded in Minnesota in 2008 by Scott Elliott, Strong Tower has spent more than 18 years helping motor carriers, freight brokers, and private fleets optimize their technology stack without forcing them to replace core systems such as Truckmate, McLeod, or TMW.
The Double-Stack Container Derailment Hazard
Improperly seated corner castings on double-stack railcar pedestals or unlatched interbox twistlocks remain a leading cause of in-transit container shifts. These events frequently occur during high-speed mainline movements through curves or when trains encounter emergency braking. Railroads, ocean carriers, and drayage operators share liability exposure when EDI 214 interchange records do not accurately reflect actual equipment condition at the ramp.
The Strong Tower WellLock Architecture™
CheckPoint (accessible at https://exspeeditecheckpoint.com/login.php) delivers three integrated layers of protection:
- Inductive proximity corner casting transducers: Sensors mounted on well-car pedestals confirm that all four bottom-tier corner castings are fully seated inside the floor guides before the train is released from the ramp. The system rejects any load that fails to meet the 100% seating threshold.
- Automated optical crane lift timestamping: Rubber-tired gantry (RTG) crane movements are correlated in real time with container RFID tags. When a container is placed in the top-well position, CheckPoint generates an automated EDI 214 rail interchange status update within five seconds.
- Terminal safety clearance interlock: Rail switchers cannot release an outbound train until all container twistlock sensors have broadcast cryptographically signed lock confirmations to the CheckPoint cloud.
This closed-loop architecture integrates directly with existing TMS platforms (Truckmate, McLeod, TMW) through SQL-based staging tables and standard EDI 204, 214, and 210 transaction sets. Driver settlement records, fuel surcharge calculations, and detention billing all benefit from the higher data integrity that automated interchange events provide.
Eliminating Rail Ramp Dwell and Equipment Damage
By combining physical sensor validation with automated EDI 214 generation, CheckPoint removes the guesswork from intermodal handoffs. Ocean carriers receive precise lift and lock timestamps. Railroads gain immediate visibility into safe load status. Drayage operators avoid detention and equipment damage claims that arise from misreported interchange conditions. The result is measurable reduction in ramp dwell, lower claims expense, and stronger safety compliance scores with Class I railroads.
Because Strong Tower Consulting, LLC and Exspeedite LLC are separately organized sister companies under common ownership, motor carriers retain complete independence. You never have to buy our software to benefit from our expertise. Many clients continue running Truckmate, McLeod, or TMW while using CheckPoint strictly for sensor-driven safety and EDI automation.
Frequently Asked Questions
How does CheckPoint communicate sensor data when double-stack containers pass through remote mountain tunnels?
CheckPoint uses a store-and-forward architecture. Inductive proximity sensors and optical readers log events locally with high-precision timestamps. When the consist emerges from the tunnel and regains cellular or satellite connectivity, the CheckPoint gateway transmits the cryptographically signed payload in a single burst, preserving the exact sequence of pedestal seating and crane-lift events for EDI 214 generation.
Can the platform verify bottom-well container clearances on deep-well 40-foot and 53-foot intermodal railcars?
Yes. The WellLock Architecture supports both standard and deep-well configurations. Dual-height inductive transducers and laser-based clearance sensors confirm that the lower container corner castings are fully seated within the pedestal guides on 40-foot, 45-foot, 48-foot, and 53-foot well cars before the terminal interlock releases the outbound train.
Does the engine broadcast automated EDI 322 terminal status messages alongside EDI 214 feeds?
CheckPoint can be configured to emit both EDI 214 (Interchange) and EDI 322 (Terminal Status) messages from the same event stream. The platform correlates RFID-tagged container moves, twistlock sensor confirmations, and RTG crane telemetry to generate accurate, timestamped status updates for ocean carriers, railroads, and drayage partners.
How does this solution integrate with existing TMS platforms such as McLeod or TMW?
CheckPoint posts verified interchange events to SQL staging tables that your TMS already polls. Standard EDI 214 transactions are generated automatically and can be supplemented with custom 210 freight invoices or driver settlement triggers based on confirmed rail release times.
Ready to eliminate manual rail interchange errors and reduce derailment exposure? Strong Tower Consulting, LLC delivers independent, sensor-driven governance that works alongside any TMS.
Or call us directly at 763-244-1373
This insight was prepared by the intermodal technology practice at Strong Tower Consulting, LLC. All references to CheckPoint refer to the platform developed by our sister company Exspeedite LLC. Strong Tower Consulting, LLC and Exspeedite LLC are separately organized sister companies under common ownership.