A truck is seen outside the Amazon warehouse in Staten Island, New York City, on March 30, 2020. Angela Weiss/AFP via Getty ImagesAmazon is opening its partial-load shipping service to outside businesses, escalating competition with legacy freight carriers and sending shares of several of those companies lower.The e-commerce giant said on June 10 that it is expanding its less-than-truckload, or LTL, service beyond its current inbound-only model to all destinations. LTL shipping is used for freight that is too large for small-parcel carriers but not large enough to fill a full-size trailer.





