ISO 4151-1987 PDF

Full title and description

ISO 4151:1987 — Road vehicles — Mopeds — Type, location and functions of controls. This International Standard specifies recommended types, locations and intended functions of operator controls on mopeds to reduce operator error and improve safety and usability for riders.

Abstract

Specifies the type and location of controls to operate different functions on mopeds, with the objective of reducing rider error resulting from inconsistent control layouts between different mopeds. The 1987 second edition cancels and replaces the first edition published in 1978.

General information

• Status: Withdrawn (withdrawal confirmed in 2021).
• Publication date: December 1987 (Edition 2).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.140 (Road vehicles).
• Edition / version: Edition 2 (1987).
• Number of pages: 2 pages (short, guidance-style document).

Scope

Gives concise recommendations on the types of controls, their preferred locations and the functions they operate on mopeds so that riders encounter consistent control layouts across different machines. The aim is to reduce confusion and operational mistakes by harmonizing control arrangements for common functions (e.g., throttle, brakes, lights, horn, ignition). The second edition (1987) replaced the original 1978 edition.

Key topics and requirements

• Standardization of control types for primary functions (throttle, front/rear brake controls, clutch where fitted, ignition and choke controls).
• Recommended ergonomic locations for handlebars, levers, switches and pedals to minimize rider distraction and errors.
• Clear assignment of functions to controls to avoid ambiguity between different moped makes/models.
• Short, normative guidance intended as a harmonizing reference rather than a comprehensive technical specification (document is only 2 pages).
• Second-edition revision that cancels the 1978 edition and consolidates previously recommended layouts.

Typical use and users

Used historically by moped and small motorcycle designers, vehicle ergonomists, national type-approval and safety regulators, technical committees and manufacturers seeking consistent operator controls across product ranges. Today it is of interest to standards librarians, historians of vehicle ergonomics and designers referencing legacy guidance for restoration or compliance research.

Related standards

Standards addressing location of hand controls, indicators, symbols and related vehicle ergonomics are related (for example standards on location of hand controls and tell-tales and on moped test methods and symbols). ISO catalogue listings and compilations of road-vehicle standards (lists of ISO standards in the 3000–4999 range) include connected items in the same ICS group.

Keywords

ISO 4151, mopeds, controls, control location, control functions, vehicle ergonomics, rider safety, road vehicles, ergonomic layout.

FAQ

Q: What is this standard?

A: ISO 4151:1987 is an International Standard that defined the recommended types, locations and functions of controls on mopeds to promote consistent, safe control layouts for riders.

Q: What does it cover?

A: It covers the assignment of functions to controls and recommended locations/arrangements for common moped controls (throttle, brakes, lights, horn, ignition, etc.) with the goal of reducing rider error from inconsistent control layouts.

Q: Who typically uses it?

A: Historically: moped manufacturers, vehicle designers, type-approval and safety authorities, and standards committees. Currently it is mainly referenced by archivists, researchers and engineers reviewing legacy guidance.

Q: Is it current or superseded?

A: ISO 4151:1987 has been withdrawn (withdrawal actions recorded in 2021). It is not an active current ISO publication.

Q: Is it part of a series?

A: It sits within the ISO road-vehicle standards area (ICS 43.140) and is thematically related to other ISO documents on controls, indicators and moped test methods, but it is a single short standard (Edition 2, 1987) rather than a multipart series.

Q: What are the key keywords?

A: Mopeds; controls; control location; control function; ergonomics; rider safety; ISO 4151; road vehicles.