The handbook, in its treatment of signs, pavement markings and signals, presents typical values or ranges of values used for implementing traffic control measures, as well as providing examples of contract plan sheets, specifications and work orders. With respect to signs, consideration is given to materials, equipment, installation, maintenance, vandalism, etc. The section on pavement markings includes materials, methods of application and application operations. Traffic signal design, operation, equipment, and maintenance are discussed, as are various types of signal systems.

Specialized publications can be said tobe all those magazines and newspapers other than the so-called mass circulation pub­lications such as Life, Reader's Digest, and Look. In this country today they constitute a multimillion dollar business which shapes opinions, gives information, which to a considerable extent affects the economy, and which supplies readers with a variety of reading material. This comprehensive study of specialized publications is written for the general reader as well as the staff member of such a publication. It makes absorbing and compelling reading for the inquiring layman who seeks to know more about modern communications; it broadens the horizons of the professional active in the field; and it provides an informative and stimu­lating text for journalism students. The author has taken great pains to make his book read­able. He himself has personal knowledge of and experience in editing magazines, and is able to give the reader something of the flavor of this intricate and important world. Of especial interest is the author's up-to-date information gathered through talks with top executives in the McGraw-Hill, Chilton, Mere­dith, and other giant corporations in the field.