The mechanism: independent temperature zones
The principle is straightforward: rather than converting your entire vehicle to a single temperature (which would suit only one product category), you divide the load space into separate zones. Each zone maintains its own temperature independently of the others.
This can work in two ways:
- Compartmentalisation with active refrigeration. The vehicle is fitted with zoning technology or dual thermal units that create distinct temperature-controlled areas within the same cargo space. One zone might run at +2°C for chilled goods, another at -18°C for frozen items, while a third ambient section requires no active cooling at all.
- Separate insulated boxes with passive temperature control. Individual insulated containers are loaded into a standard vehicle, each configured with its own temperature plate (PCM) to hold the required temperature. A box preconditioned to frozen temperatures sits alongside another holding chilled goods, and both travel in the same unrefrigerated vehicle.
Both methods achieve the same outcome: each product group stays in its correct temperature range throughout the journey, isolated from the conditions affecting other products in the same vehicle.
Why this matters for mixed-load delivery
This approach avoids the operational constraint of running separate vehicles for each temperature category. For mixed-load local delivery and multi-drop routes, where a single driver might deliver fresh sandwiches to one customer, frozen meat to another, and ambient packaged goods to a third independent temperature zones make the route viable in one vehicle.
You are not forcing chilled products into a frozen environment or vice versa, and you are not running a refrigerated vehicle at full cost when half the load is ambient. Each product travels in the condition it needs, and the route runs efficiently as a single journey.
Whether you use active zoning technology or passive insulated boxes depends on your fleet, your route density, and your operational model. Either way, one vehicle covers temperature requirements that would otherwise need several.