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Delivery is the process of transporting goods from a source location to a predefined destination.[1]Cargo (physical goods) is primarily delivered viaroads andrailroads on land, shipping lanes on the sea, andairline networks in the air. Certain types of goods may be delivered via specialized networks, such aspipelines for liquid goods,power grids for electrical power andcomputer networks such as theInternet orbroadcast networks for electronic information.[2]Car transport is a particular subgroup; a related variant isAutorack, which involves the transport of autos byrailroads.
Delivery is a fundamental component ofcommerce andtrade, and involvestransport and distribution. The general process of delivering goods is known asdistribution, while the study of effective processes for delivery and disposition of goods and personnel is calledlogistics. Firms specializing in delivering commercial goods from the point of production or storage to theirpoint of sale are generally known as distributors, while those that specialize in the delivery of goods to the consumer are known asdelivery services.Postal,courier, andrelocation services also deliver goods for commercial and private interests.
Most consumer goods are delivered from a point of production (such as afactory orfarm) through one or more points of storage (warehouses) to a point of sale (such asretail stores oronline vendors), where the consumer buys the good and is responsible for its transportation to point of consumption.[3] There are many variations on this model for specific types of goods and modes of sale. Products sold via catalogue or the Internet may be delivered directly from the manufacturer or warehouse to the consumer's home, or to anautomated delivery booth. Small manufacturers may deliver their products directly to retail stores without warehousing.
Some manufacturers maintainfactory outlets which serve as both points of storage and points of sale, selling products directly to consumers at wholesale prices, although many retail stores falsely advertise as factory outlets. Building, construction,landscaping and like materials are generally delivered to the consumer by a contractor as part of another service. Some highly perishable or hazardous goods, such asradioisotopes used inmedical imaging, are delivered directly from manufacturer to consumer.
Home delivery is often available forfast food and other convenience products,[4] e.g.pizza delivery.[5] Sometimes home delivery ofsupermarket goods is possible.[6] Amilk float[7] is a smallbattery electric vehicle (BEV), specifically designed for the delivery of freshmilk. A new form of delivery is emerging on the horizon of theinternet age: delivery by the crowd.[8] In this concept, an individual not necessarily contracted by the vendor performs the delivery of goods to the destination. Sometimes, privatecourier companies will also deliverconsumer goods on a regular basis for companies likeE-commerce businesses. In the 2010s and 2020s,a number of companies started usinggig workers driving their own vehicles rather than permanent employees driving company vehicles to make deliveries of groceries, food, and general retail items.[9][10][11] Drivers typically sign up and get work assignments using asmartphone app. Arrangements range from producers and deliveries made by separate companies (such as withUber Eats,DoorDash andGrubHub) to in-house deliveries only (such asAmazon Flex, although Amazon also uses contracted delivery companies in Amazon-branded vehicles), to a mixture (such asWalmart Spark, which delivers both Walmart and third-party products).
The consumer demand for supermarkets to deliver to their door created the need for a mixed temperature controlled vehicle on 3.5T chassis. These vehicle bodies were initially built with the traditional GRP sandwich panels but as more damage resistant lightweight materials with better insulation properties have become available companies have been developing Advanced Home Delivery Vehicles. The 2012 Commercial Vehicle Show in theUK saw the new JDC PolyBilt design, one of the latest of these "Plastic" bodies that can be recycled at the end of its service life, unlike the traditional GRP which ends up as landfill.
Vehicles are often specialized to deliver different types of goods. On land,semi-trailers are outfitted with varioustrailers such as box trailers,flatbeds,car carriers and other specialized trailers, whilerailroadtrains include similarly specialized cars.Armored cars,dump trucks andconcrete mixers are examples of vehicles specialized for delivery of specific types of goods. On the sea,merchant ships come in various forms, such ascargo ships,oil tankers andfishing boats.Freight aircraft are used to deliver cargo.
Often,passenger vehicles are used for delivery of goods. These includebuses,vans,pick-ups,cars (e.g., for mail or pizza delivery),motorcycles andbicycles (e.g., for newspaper delivery). A significant amount of freight is carried in the cargo holds of passenger ships and aircraft. Everyday travelers, known as a casual courier, can also be used to deliver goods. Delivery to remote, primitive or inhospitable areas may be accomplished usingsmall aircraft,snowmobiles,horse-drawn vehicles,dog sleds,pack animals, on foot, or by a variety of other transport methods.
New methods of delivery, such asdelivery robots anddelivery drones, have been introduced. Larger firms includingAmazon,Google, andFedEx have been investing in using delivery drones that are capable of carrying light packages across short distances. Such firms may also use a Delivery Driver App to plan efficient routes to help ensure they deliver items on time.[12]
Some products are delivered to consumers on a periodic schedule.[13] Historically, home delivery of many goods was much more common in urban centres of the developed world. At the beginning of the 20th century, perishable farm items such as milk, eggs and ice, were delivered weekly or even daily to customers by local farms.Milkmen delivered milk and otherfarm produce. With the advent of home refrigeration and better distribution methods, these products are today largely delivered through the same retail distribution systems as other food products.Icemen delivered ice foriceboxes until home refrigerators rendered them obsolete. Similarly, laundry was once picked up and washed at a commerciallaundry before being delivered to middle-class homes until the appearance of thewashing machine anddryer. (The lower classes washed their own clothes and the upper classes had live-in servants.) Likewise deliveries of coal and wood for home heating were common until they were replaced in many areas bynatural gas, oil, or electric heating.[14] Some products, most notablyhome heating oil, are still delivered periodically. Human blood may be delivered to hospitals on a periodic schedule.[13] Milk delivery continued until the mid-twentieth century across North America. For example, the last milk delivery by horse-and-wagon inEdmonton was in 1961.[15]Milkman jokes continue in circulation long after. Related lines ofJeannie C. Riley's 1968 hit song "Harper Valley PTA" say:
There's old Bobby Taylor sitting there, and seven times he's asked me for a date,
And Mrs. Taylor sure seems to use a lot of ice whenever he's away.
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