Bicycle handlebar a steep U-shape from the base, so that the rider's hands rest above waist-level. This style of bicycle handlebar became very popular in the 1960s after the introduction of wheelie bikes such as the Schwinn "Sting-Ray", Raleigh Chopper, and other highly stylized youth bicycles that imitated the appearance of drag-racing or chopper motorcycles of the day. Legislation in the United States introduced during the 1970s limited the maximum height of manufacturer-installed handlebars to 16 inches above the lowest seat setting; European Union safety regulations use a similar limit of 400mm. The apehanger style remained common in the US through the
Bicycle map quickly supplanted most travel by bicycle and bike maps, like the bicycle itself largely stagnated for several decades. The 1970s bike boom led to the creation once again of cycling maps for the general public, but in the meantime, the nature of most cycling trips had shifted rather dramatically as cities were being reorganized around cars. Many maps of this period emphasised the recreational dimension of cycling, highlighting recreational routes and a limited range of off-street trails. Today, many cities or local advocacy groups produce bicycle maps. Often this still takes the form of a full-size paper map, but increasingly,