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Peter Dovak出生于肯塔基州，居住于华盛顿特区。几年前他发掘了自己对平面设计的热情和潜力，并投身于这一事业中。他制作这一系列地铁地图的初衷是想开发一个iPhone app。虽然并不擅长程序与编码，但对图形设计的热忱促使他坚持完成了这些地铁线路图。

Peter Dovak is born in Kentucky and living in Washington, DC. It was just few years ago, he discovered his passion into graphic design. The origin was an attempt to make an iPhone app years ago. Though coding is not his forte, he continues this project with fun and passion.

北京 Beijing

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巴塞罗那 Barcelona

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首尔 Seoul

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东京 Tokyo

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伦敦 London

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巴黎 Paris

为了匹配手机应用，这些地铁线路都被限定在120像素的圆形图案里。图像中的所有线条必须为3像素宽，且需要与其并行的其他线条保持3像素的间隔。图形中的所有斜线都必须为45度。图形所参考的线路均为非常成熟的城市轨道交通系统。然而想把所有城市轨道交通系统都简化为图像并不是一件容易的事。比如一些非常复杂的城市交通网络如北京，东京，巴黎，首尔，纽约等，能将它们与简化的图形相匹配给予设计师以极大的激励。这些简化的图像让复杂的城市轨道交通变得更易理解，也更加具有辨识度。伴随着城市交通的迅猛发展，这些地图也进行了一定程度的更新，并将持续更新中。

All of the graphics have to fit in a 120px circle, and the lines in the graphic have to be 3px wide and with a minimum of another 3px between the next parallel line. Besides, all the diagonals have to be fixed in 45-degrees. The graphics express the full-fledged urban transportation networks. Yet, it is uneasy to simplify all these networks into graphics. Such like Beijing, Tokyo, Paris, Seoul, New York City which have complex networks have been great challenges to meet all the requirements mentioned above, while the result is satisfying and inspiring. The graphics are making the metro maps so recognizable even at a small size. Small changes have been made since the development of the urban transportation system, and are being updating.