B. Business signs: The business sign color shall be a white message on a blue background, except that colors consistent with customary use should be used with nationally, regionally or locally known symbols or trademarks. The principal legend on the business sign shall be reflectorized and at least 10 inches in height, whether upper or lower case alphabet is used; however, where the symbol or trademark is used alone for the business sign, any legend on the symbol or trademark shall be in proportion to the size thereof, consistent with customary use. The business signs shall have a white border except that when symbols or trademarks are used the border may be omitted. The background, border, and all legend shall consist of type III, or greater, retroreflective sign sheeting.

[9/30/98; 18.21.3.13 NMAC - Rn, 18 NMAC 21.3.13, 1/14/2005]