NAMEPLATE X TRAFFIC SIGN X ROAD SIGN
adapted from the original texts found in: thefreedictionary)

A nameplate identifies and displays a person or product's name. Name plates are usually shaped as rectanglesbut are also seen in other shapes, sometimes taking on the shape of someone’s name. The primary use of name plates is for informative (as in an office environment, where name plates are mounted on doors or walls in order to identify employees) and commercial purposes (as in a retail environment, where name plates are mounted on products to identify the brand). Whereas name tags tend to be worn on uniforms or clothing, name plates tend to be mounted onto an object (e.g., cars, amplification devices) or physical space (e.g.,doors, walls, or desktops). Nameplates are also distinct from name plaques. Plaques are items of larger dimensions that are designed to communicate more information than a name and title.

Office nameplates generally are made out of plastic or wood and usually contain one or two lines of text. The standard format for an office nameplate is to display a person’s name on the first line and a person’s job title on the second line. It is common for organizations to request nameplates that exclude the job title. The primary reasons for excluding job titles are to extend the longevity of a name plate and to promote a culture of meritocracy, where the strength of one’s thoughts are not connected to one’s job title. Name plates without job titles have longer lives because someone can reuse the same name plate after changing job titles. It is rare for an office name plate to contain three or more lines of text. Although office name plates range in size, the most popular name plate size is 2 inches x 8 inches (5.08 cm x 20.32 cm). Office name plates typically are made out of plastic. This is because plastic is an inexpensive material relative to wood and metal. More expensive name plates can be manufactured out of bronze. To promote consistency, organizations tend to use the same style name plate for all employees. This helps to achieve a standard look. Office name plates are not restricted to for-profit enterprises. Many non-profit and governmental agencies have a need for name plates. For plastic and wooden name plates, the names are etched into the material through a number of processes, including mechanical engraving or laser engraving.
Personal name plates
Name plates are also popular for personal reasons. Parents often like to adorn the doors of their children’s rooms with name plates. These name plates are conventionally crafted out of wood, not plastic or metal. Because the name plates are meant for children, these personal name plates tend to come in fun shapes. Examples of fun shapes include teddy bears, bluebirds, dogs, and the child’s name. These name plates also tend to be more colorful than office name plates. Mounting options are either by nail or by adhesive. Wooden name plates are not normally glued onto doors, as the glue may leave a messy residue and make it harder to remove the name plate. Larger personal name plates also include graphics or artwork, such as a horse or a baseball bat, that match the interests of the identified person. The graphics or artwork reinforce the individuality and personalization established by the name plate.

Now compare the one above with these : Traffic sign / Road sign

Traffic signs or road signs are signs erected at the side of roads to provide information to road users. With traffic volumes increasing over the last eight decades, many countries have adopted pictorial signs or otherwise simplified and standardized their signs to facilitate international travel where language differences would create barriers, and in general to help enhance traffic safety. Such pictorial signs use symbols (often silhouettes) in place of words and are usually based on international protocols. Such signs were first developed in Europe, and have been adopted by most countries to varying degrees.

for pictures on the topic see : http://encyclopedia.thefreedictionary.com/traffic%20sign
and http://encyclopedia.thefreedictionary.com/Name+plate