Information Design

Information design began as a subset of, graphic design and is often taught as part of a graphic design course. One of the first uses of the term was by London graphic design consultancy, Pentagram, who used the term in the 1970s to mean graphic design, as distinct from product or other kinds of design.

Information designers are able to cater to a very broad audience, for example, public signs in airports and even road signs. They may also cater to very specific ones such as telephone bills that are personalized for individual customers. Information design projects often seek to create or reinforce trust in users of design products. Examples of such products are medicine packaging inserts, operational instructions for industrial, and information for emergencies. It is very important that these information designs are as clear so that readers are able to understand, trust and are motivated by the product.

Reference
http://en.wikipedia.org/wiki/Information_Design
www.informationdesign.org/