Also held during this period was the movement from outside the city on the street to the subway. Graffiti also saw the first seeds of competition at that time. The goal of most artists today is to "wake up" several tags and bombs in as many places as possible. Artists began to move in the subway train yards away as they could with a lower risk, often to create complex works of art along the subway car. This occurs when the action, the bombing was officially established.
By 1971 tags began to take their side of the calligraphic signature because, due to a large number of artists, each of the graffiti artist needed a way to differentiate themselves. Besides the growing complexity and creativity, tags also began to grow in size and scale - for example, many artists have begun to increase the font size and line width, and put their tags . This has given rise to so-called "work" and "parts" of 1972. Super Kool 223 is credited as being the first to make these parts.
The use of drops of these drawings or hatching, and auditors increasingly popular. Using spray paint has increased dramatically during this period that artists began to expand their work. "Top-to-bottom", works that reach all the car up, making their first appearance at this time. The overall creativity and artistic maturation of this time has not gone unnoticed by the mainstream - Hugo Martinez founded the United Graffiti Artists (UGA) in 1972. UGA consists of many graffiti artists of the time, and aims to present graffiti in an art gallery. In 1974, graffiti artists have begun to combine the use of scenery and cartoon characters in their work. TF5 (The Fabulous Five), is a crew known complex designed for the entire car.