The Highway Code Great Britain version, available in English and Welsh, applies to England, Scotland and Wales, but regional specific signs such as driver location signs in England or bilingual signs in Scotland and Wales are not covered. The Northern Ireland version, available in English and Irish, applies to Northern Ireland. Costing one penny, the first edition of the Highway Code was published on 14 April 1931. It contained just 18 pages of advice, including the arm signals to be given by drivers and police officers controlling traffic. The second edition, considerably expanded, appeared in 1934, and now illustrated road signs for the
Highway Beautification Act in the United States Code at 23 U.S.C. 131 (j). Its provisions still exist by reason of agreements with the states. The Bonus Act provided an incentive to states to control outdoor advertising within of the Interstate highway system. States which volunteered for the program would receive a bonus of one-half of one percent of the Federal highway construction costs on segments of Interstate highways controlling outdoor advertising. Two amendments were adopted which allowed outdoor advertising along portions of Interstate highways. The first amendment was known as the "Cotton Amendment", which exempted any areas adjacent to part of a right-of-way,