Temperature-controlled freight is broader than refrigeration. Match the transportation conditions to the product owner's instructions, then confirm equipment and available records for the shipment.
In This Guide
What It Means
Heated transportation adds heat when the shipment requires it. Freeze protection aims to prevent freezing under the specified conditions; it does not automatically mean a particular chilled setting. Controlled ambient keeps freight within a defined product-owner range rather than leaving it exposed to uncontrolled seasonal conditions.
Chilled and refrigerated freight use cooling suited to the product's written requirements. Frozen freight has its own specified conditions. These terms do not select a universal temperature for food, pharmaceuticals, cannabis or agricultural products.
Why It Matters
Product requirements must be confirmed before booking. A generic request for a reefer does not establish a setpoint, operating mode, acceptable variation, pre-cooling instruction or monitoring plan. The shipper or responsible product owner supplies these requirements; OTR coordinates transportation around them.
How It Works
Equipment differences
A heated trailer, reefer trailer, refrigerated straight truck or van may suit different shipment sizes and operating needs. Carrier capacity is sourced, not an OTR-owned fleet. Equipment depends on the product, lane and availability; not every temperature-controlled shipment uses a reefer.
Multi-temperature options
Multi-temperature equipment may be appropriate when products need separate environments and suitable equipment is available. Compartment separation, compatibility, loading, handling and receiver instructions must be reviewed. Shared LTL is not suitable for every food or produce shipment.
Common Challenges
- Confusing freeze protection with a standard refrigerated setting
- Assuming all products in one commodity group share a temperature
- Treating trailer air readings as direct product-temperature measurements
- Assuming real-time monitoring or records are included
Best Practices
Supply the temperature range and units, equipment and operating instructions, pickup readiness, appointments and exception contacts. Request monitoring or records explicitly; availability depends on the assigned carrier and equipment. Confirm sensor type, placement and recording interval.
This is OTR transportation-planning guidance, not legal advice, food-safety certification, product-disposition or carrier approval, a substitute for shipper SOPs or product-owner instructions, or a guarantee of shelf life or condition. The shipper or responsible product owner supplies temperature and handling instructions; receiver requirements and qualified specialists govern product decisions.
When to Use This Service
Continue planning with shipment-specific instructions and confirm availability before booking.
Official references: CFIA explains applicable Canadian preventive-control requirements; FDA explains the U.S. sanitary-transportation rule and role-based responsibilities, including scope, exemptions and agreements. These are distinct from OTR planning recommendations. The USDA handbook is historical technical guidance, not a current regulation or universal commodity-temperature prescription. Check applicable current requirements with the responsible shipper, importer and appointed customs broker.
Read temperature-controlled freight guides, the temperature-controlled quote checklist and our food and beverage freight service.
Planning references only—not legal advice, food-safety certification, product-disposition or carrier approval, substitutes for shipper SOPs or product-owner instructions, or guarantees of shelf life or product condition. Confirm written instructions with the responsible parties.
Numerical commodity examples are general references, not universal transport temperatures or shipment instructions. Follow the product owner’s, shipper’s and receiver’s current requirements.
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