Guidelines are presented for use by driver licensing agencies in the development of driver manuals, tests, and other means of disseminating information and testing license applicants. An introductory chapter discusses the purposes of written license tests and of drivers' manuals, focusing on the needs of groups of drivers based on kind of vehicle, experience, age, driving record, reading ability, residence, and language. Chapter 2 outlines driver information needs for seven categories of drivers and suggests special approaches to the dissemination and assessment of that information. The seven driver categories are new drivers, renewals, older drivers, traffic violators, accident repeaters, drinking drivers, and special vehicle operators. Chapter 3 presents criteria for development of manuals (content, organization, and style) and other systems for presenting information to drivers (e.g., audiovisual presentations and group instruction). The selection of content for driver tests, preparation of test items, construction of tests, and consideration of alternative information assessment systems are covered in chapter 4. The final chapter describes techniques for evaluating the effectiveness of various techniques in leading to acquisition, retention, and application of driving information. (The guide grew out of a research project to develop and test an information system designed to meet the needs of various categories of drivers. The final research report and a summary of it are available as CE 015 838 and CE 014 870.) (JT)