Drop and Hook

An arrangement among the shipper, carrier, and consignee whereby the carrier leaves a trailer filled with freight at a destination and hooks up to haul away an empty trailer.

Drop Ship

A customer fulfillment strategy where products are shipped directly from the manufacturer or distributor to a customer, bypassing the retail or secondary distribution location, is intended to expedite delivery and reduce handling costs. Billing transactions occur in the normal manner; only the material flow is altered.

Drop shipping

This is a retail fulfillment method in which a business does not keep the products it sells in stock. When a dropshipping retailer sells a product, it purchases the item directly from a third party (a manufacturer, wholesaler, or another retailer) that ships the product directly to the customer.

Drop Trailers

Trailers that are unhooked from a tractor when the truck reaches its destination.

DRP

Distribution Requirements Planning (DRP)

DRPII

Distribution Resource Planning

Drum-Buffer-Rope (DBR)

A manufacturing execution methodology, named for its three components, is the drum, the work center or machine, or operation that limits the ability of the entire system to produce more. The rest of the plant follows the beat of the drum. They make sure the drum has work and that anything the drum has processed does not get wasted.

DSD

Direct Store Delivery

DSO

Days Sales Outstanding

DSS

Decision Support System

DTF

Demand Time Fence

DTS

Direct Store Delivery

Dual Operation

A motor carrier that has both common and contract carrier operating authority.

Dual Rate System

An international water carrier pricing system, where a shipper signing an exclusive use agreement with the conference, pays a lower rate (10% to 15%) than non-signing shippers for an identical shipment.

Dumping

The act of selling goods below cost in selected markets is an effort to gain market share or eliminate competition.

Dunnage

The materials used in packaging, holds, and containers are used to protect goods from damage.

DUNS

Data Universal Numbering System.

DUNS Number

A unique nine-digit number assigned by Dun & Bradstreet to identify a company, DUNS stands for Data Universal Numbering System.

Durable Goods

A good that does not quickly wear out, or more specifically, yields services or utility over time (typically 3 years or more) rather than being completely used up when used once.

Duty Free Zone (DFZ)

An area where goods or cargo can be stored without paying import customs duties while awaiting manufacturing or future transport.

Dwell Time

The period of time during which a dynamic process is halted in order for another process to occur.

Dynamic Lot Sizing

A lot-sizing technique where the order quantity is subject to continuous re-computation to take into account that the demand for the product varies over time.

Dynamic Process Control (DPC)

Continuous monitoring of process performance and adjustment of control parameters to optimize process output.

Dynamic Rescheduling

A functional capability of resource planning and operations management systems is to provide the ability to reschedule activities 'on the fly' in the event of a change in one of the factors affecting the schedule, such as a late shipment or equipment failure.