prEN IEC 63281-5-1:2026

• Status: Not Published
• Publication Date: 16-Mar-2028
• ICS: 43.120 - Electric road vehicles
• Technical Committee: CLC/SR 125 - Personal e-Transporters (PeTs)
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 28-Aug-2026
• Due Date: 30-Oct-2026
• Completion Date: 28-Aug-2026
• Ref Project: oSIST prEN IEC 63281-5-1:2026 - Interface requirements of autonomous cargo e-Transporters and cloud platform scheduling system

Overview

The prEN IEC 63281-5-1:2026 standard, published by CLC, defines the interface requirements for autonomous cargo e-Transporters (ACeTs) and cloud platform scheduling systems. As the adoption of electric and autonomous cargo vehicles increases globally, unified interface protocols enable seamless communication, improve operational safety, and drive the efficiency of logistics processes across diverse electric road vehicle platforms. This standard addresses the lack of common interface protocols between cargo e-Transporters and cloud-based logistics management solutions, fostering interoperability and future growth in smart logistics.

Key Topics

• Communication Protocols: The standard specifies the use of both MQTT (v3.1.1 or above) and HTTP/1.1 as application layer protocols, ensuring flexibility for varying bandwidth and system requirements.
• Message Structure: Communication utilizes structured JSON messages based on ISO/IEC 21778, ensuring compatibility and readability across platforms.
• Route Management:
  • Route Creation, Update, and Cancellation: The cloud platform generates route instructions, which ACeTs execute independently or semi-autonomously.
  • Execution Feedback: ACeTs systematically report execution status, position, and faults back to the cloud, supporting real-time monitoring and incident response.
• Action and State Objects: The standard defines specific message objects for reporting vehicle states, handling exceptions (like route pauses or fault resets), and updating operational data (energy level, control mode, etc.).
• Granularity and Flexibility: Route node granularity can be adjusted based on ACeT capabilities-from coarse (major intersections) to fine detail (meter-level accuracy).
• Safety and Exception Handling: Guidelines are included for verifying route instructions, managing exceptions, and safely handling failures or deviations.

Applications

Implementing prEN IEC 63281-5-1:2026 provides practical benefits for:

• Autonomous Logistics Fleets: Ensures that autonomous cargo vehicles from different manufacturers can interact reliably with central fleet management software, facilitating mixed-fleet operations.
• Warehouse and Distribution Centers: Enables automated scheduling, execution, and supervision of material transport tasks, supporting just-in-time logistics and minimizing downtime.
• Public Road Cargo Delivery: Standardizes safe interaction between autonomous vehicles and cloud platforms in urban, suburban, or industrial zones, critical for scaling last-mile delivery and autonomous supply chains.
• Smart City Infrastructure: Provides foundational protocols for integration with broader smart transportation systems, including traffic management and urban mobility platforms.
• Systems Integrators and OEMs: Reduces development effort by providing clear interface and protocol specifications, accelerating deployment and certification cycles.

Related Standards

For comprehensive compatibility and implementation, reference the following standards, which are normatively cited within prEN IEC 63281-5-1:2026:

• IEC 63281-1:2023 – E-Transporters: Terminology and classification
• IEC 63281-2-2 – Safety requirements and test methods for autonomous cargo e-Transporters
• ISO/IEC 20922:2016 – Message Queuing Telemetry Transport (MQTT) v3.1.1
• ISO/IEC 21778:2017 – JSON Data Interchange Syntax
• IETF RFC 9112 – HTTP/1.1 Protocol Specification

Other related references include ISO and IEC terminology databases and industry best practices on secure and reliable machine-to-machine (M2M) communications.

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Keywords: autonomous cargo e-Transporters, cloud platform scheduling system, electric road vehicles, interface requirements, MQTT, HTTP/1.1, JSON, logistics automation, IEC 63281, interoperability, smart logistics, fleet management.

SLOVENSKI STANDARD
01-november-2026
Zahteve za vmesnike avtonomnih tovornih e-prevoznikov in oblačnega sistema za
razporejanje prometa
Interface requirements of autonomous cargo e-Transporters and cloud platform
scheduling system
Ta slovenski standard je istoveten z: prEN IEC 63281-5-1:2026
ICS:
43.120 Električna cestna vozila Electric road vehicles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

125/134/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63281-5-1 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2026-08-28 2026-11-20
SUPERSEDES DOCUMENTS:
125/129/CD, 125/132/CC
IEC TC 125 : E-TRANSPORTERS
SECRETARIAT: SECRETARY:
Belgium Mr Bram Rotthier
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
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TITLE:
Interface requirements of autonomous cargo e-Transporters and cloud platform scheduling system

PROPOSED STABILITY DATE: 2030
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IEC CDV 63281-5-1 © IEC 2026
CONTENTS
Contact . 2
CONTENTS . 1
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Basic specifications . 8
4.1 Overall Architecture . 8
4.1.1 General . 8
4.1.2 Information Flow . 8
5 Message format . 9
5.1 Message Header . 9
5.2 Communication Object . 9
5.3 Route Object . 10
5.3.1 Explanation of Route Mechanism . 10
5.3.2 Format of Route Object . 11
5.4 Action Object . 12
5.4.1 Description . 12
5.4.2 Format of Action Object . 13
5.5 RouteState Object . 13
5.5.1 Description . 13
5.5.2 Format of RouteState Object . 13
5.6 RouteVerificationState Object . 14
5.6.1 Description . 14
5.6.2 Format of RouteVerificationState Object . 14
5.7 State Object . 14
5.7.1 Description . 14
5.7.2 Format of State Object. 14
Annex A (normative) Message example . 16
A.1 Example of new Route . 16
A.2 Example of updating Route . 16
A.3 Example of State . 17
A.4 Example of RouteState . 18
A.5 Example of Action PauseRoute . 18
Bibliography . 19

Figure 1 – Information Flow . 9
Figure 2 – Nodes in a route . 10
Figure 3 – Route update diagram . 11

Table 1 – Message head . 9
Table 2 – Communication Object . 9
Table 3 – Structure of Route . 11
Table 4 – Structure of node . 12
IEC CDV 63281-5-1 © IEC 2026
Table 5 – Structure of Action Object . 13
Table 6 – Optional values of actionType . 13
Table 7 – Structure of nodeSequenceId . 13
Table 8 – Structure of RouteState Object . 13
Table 9 – Structure of RouteCheckState Object . 14
Table 10 – Structure of State Object . 14
Table 11 – Structure of fault. 15

IEC CDV 63281-5-1 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Interface requirements of autonomous cargo e-Transporters and cloud
platform scheduling system
FOREWORD
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IEC CDV 63281-5-1 © IEC 2026
may be obtained from the patent database available at https://patents.iec.ch or 9) IEC draws
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IEC shall not be held responsible for identifying any or all such patent rights. . IEC shall not be
held responsible for identifying any or all such patent rights.
IEC 6XXXX has been prepared by IEC technical committee 125: e-Transporters. It is an
International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
XX/XX/FDIS XX/XX/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
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– reconfirmed,
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– revised.
IEC CDV 63281-5-1 © IEC 2026
INTRODUCTION
Standardization of "autonomous cargo e-Transporters": autonomous cargo electrically powered
transport devices for use on public roads or in public spaces. These e-Transporters provide
solutions for transporting goods.
These devices should be autonomous.
This document has been developed in response to an increased demand throughout the world
for Autonomous Cargo e-Transporters. The world market sizes and applications are expected
to grow significantly. To date, autonomous cargo e-Transporters have not had a complete and
unified standard of interface with cloud platform scheduling system. This has created
challenges for engineers, producers, operators, and other actors in the field of autonomous
cargo e-Transporters. The development of an interface standard applicable to autonomous
cargo e-Transporters, will promote the standardization of autonomous cargo e-Transporters,
aid the progress of technology, improve product quality, and increase safety.
IEC CDV 63281-5-1 © IEC 2026
1 Scope
This document specifies the communication protocol for the interface between autonomous
cargo e-Transporters as defined by IEC 63281-2-2 and cloud platform scheduling system,
including technical requirements such as message format, message transmission met hod.
This document mainly describes the communication protocol of the autonomous cargo e -
Transporters in terms of driving, including the creation, update, and cancellation of path
instructions issued by the cloud platform scheduling system, as well as the statu s feedback of
the autonomous cargo e-Transporters when executing path instructions and basic exception
handling messages.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 63281-1:2023, E-Transporters - Part 1: Terminology and classification
ISO/IEC 20922:2016, Information technology — Message Queuing Telemetry Transport
(MQTT) v3.1.1
ISO/IEC 21778:2017, Information technology — The JSON data interchange syntax
IEC 63281-2-2: E-Transporters – Part 2-2: Safety requirements and test methods for
autonomous cargo e-Transporters
IETF RFC 9112, HTTP/1.1
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 63281-1:2023 and
the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
3.1
e-Transporter
electrically powered transport device for use on public roads or in public spaces which provides
solutions for transporting either passengers or goods, or both
[SOURCE: SOURCE: IEC 63281-1:2023, 3.2]
3.2
autonomous e-Transporter
e-Transporter that can operate in autonomous driving mode or semi-autonomous driving mode,
and it drives within defined operational preconditions such as ODDa (IEC 63281-2-2, 3.6)

[SOURCE: SOURCE: IEC 63281-2-2 , 3.2]
IEC CDV 63281-5-1 © IEC 2026
3.3
cargo e-Transporter (CeT)
e-Transporter that is primarily designed for transporting cargo or goods, or both
[SOURCE: IEC 63281-1:2023, 3.4]
3.4
autonomous cargo e-Transporter(ACeT)
autonomous e-transporters traveling without human intervention in carrying loads of parcels
and goods to designated locations including public road environments and public spaces (e.g.,
walkway, pedestrian road, big building's corridors) coexisting with unspecified humans with a
maximum speed not exceeding specified limit

Note 1 to entry: Even if in case of over the operational preconditions, an authorized users can operate remotely for
the ACeTs manually via an external systems or supplementary telecommunication control devices.
[SOURCE: IEC 63281-2-2, 3.4]
3.5
cloud platform scheduling system
cloud platform
Cloud
software system deployed in public/private networks, providing full-lifecycle management and
scheduling for ACeT—including real-time operating status monitoring, intelligent task
assignment, and overall transportation efficiency optimization
3.6
instruction
data collection for communication between ACeTs and cloud platform scheduling system, used
to guide and regulate the operation of ACeTs
3.7
route
instruction to move the ACeT along the path, consisting of a series of nodes forming a straight
line or curve, describing complete information from the starting point to the endpoint
3.8
HTTP/1.1
HyperText Transfer Protocol version 1.1
Note 1 to entry: HTTP/1.1 is a stateless application-level request/response protocol for distributed, collaborative
hypermedia information systems.
Note 2 to entry: In this document, “HTTP” means HTTP/1.1 unless otherwise specified.
[SOURCE: IETF RFC 9112]
3.9
MQTT v3.1.1
Message Queuing Telemetry Transport version 3.1.1
Note 1 to entry: MQTT v3.1.1 is a lightweight client-server publish/subscribe messaging transport protocol for
machine-to-machine (M2M) and Internet of Things (IoT) applications.
[SOURCE: ISO/IEC 20922:2016]
3.10
JSON
JavaScript Object Notation
IEC CDV 63281-5-1 © IEC 2026
Note 1 to entry: JSON is a lightweight, text-based, language-independent data interchange syntax.
Note 2 to entry: This syntax is consistent with IETF RFC 8259
...