Download or read book TB T 3139 2021 Translated English of Chinese Standard TBT3139 2021 written by https://www.chinesestandard.net and published by www.ChineseStandard.net. This book was released on 2022-06-04 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document specifies the technical requirements for direct communication roadside units, which is supported by the ITE-based vehicular communication (LTE-V2X). This document applies to roadside units, which adopts the LTE-V2X-based direct communication.