GB/T 43407.2-2023Road vehicles -- Ergonomic requirements for the driver’s compartment in low-floor line-service buses -- Part 2: Visibility (English PDF)

Foreword

This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives

for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing Documents.

This document is Part 2 of GB/T 43407 Road Vehicles - Ergonomic Requirements for the

Driver's Compartment in Low-floor Line-service Buses. GB/T 43407 has issued the following parts:

---Part 1: General Description and Basic Requirements;

---Part 2: Visibility;

---Part 3: Information Devices and Controls;

---Part 4: Compartment Environment.

This document modifies and adopts ISO 16121-2:2011 Road Vehicles - Ergonomic

Requirements for the Driver's Workplace in Line-service Buses - Part 2: Visibility.

In comparison with ISO 16121-2:2011, the structural adjustments are as follows:

---3.1 in ISO 16121-2:2011 is deleted, and 3.1 and 3.2 in this document correspond to 3.2

and 3.3 in ISO 16121-2:2011;

---4.1.1 and 4.1.2 in this document correspond to 4.1.1 in ISO 16121-2:2011, and the

"NOTE" to 4.2.2 correspond to 4.2.2.3 in ISO 16121-2:2011;

---4.3.1, 4.3.2, 4.5.1 and 4.5.2 are added.

In comparison with ISO 16121-2:2011, the technical differences and the reasons for these

differences are as follows:

---The normative reference GB/T 43407.1-2023 is used to replace ISO 16121-1 (see

Chapter 3 and Chapter 4), so as to adapt to the technical conditions of China and

enhance the operability;

---The term "low-floor" and its definition are deleted (see 3.1 of ISO 16121-2:2011), so as

to avoid duplication of definitions;

---The normative reference of GB 15084 is added (see Chapter 4), so as to adapt to the

technical conditions of China and enhance the operability;

---The requirement that "the diameter of the circular rod shall be less than or equal to 20

mm" is added, and meanwhile, the determination method for the visibility area is added

(see 4.1), so as to facilitate the detection of the forward visibility. At the same time, the

relevant requirements for the lower viewing angle of buses and the normative reference

Road Vehicles - Ergonomic Requirements for the Driver's

Compartment in Low-floor Line-service Buses - Part 2: Visibility

1 Scope

This document specifies the requirements for the driver's visibility in front of the buses, at the

entrance and exit toward the driver's seat, and in the interior passenger compartment area.

This document is applicable to the design of the driver's compartment of Category-M3 low-

floor line-service buses with a width greater than 2.30 m. Other buses may take this as a

reference.

2 Normative References

The contents of the following documents constitute indispensable clauses of this document

through the normative references in the text. In terms of references with a specified date, only

versions with a specified date are applicable to this document. In terms of references without a

specified date, the latest version (including all the modifications) is applicable to this document.

GB/T 13053-2008 Bus Inner Dimensions

GB 15084 Motor Vehicles - Devices for Indirect Vision - Requirements of Performance and Installation

GB/T 43407.1-2023 Road Vehicles - Ergonomic Requirements for the Driver's Compartment

in Low-floor Line-service Buses - Part 1: General Description and Basic Requirements (ISO 16121-1:2012, MOD)

3 Terms and Definitions

What is defined in GB/T 43407.1-2023, and the following terms and definitions are applicable

to this document.