The numbers need to all be on the top tube and highly legible. A serial number on the bottom bracket is almost useless because it will be covered in muck. A num

The numbers need to all be on the top tube and highly legible. A serial number on the bottom bracket is almost useless because it will be covered in muck. A number hidden on the rear drop out is obviously useless. A number under the seat is also too hard to read. It'd be nice if the frame manufacturers fixed this.