This has proven to be very successful, where top athletes now have been established numbers. Riders like #77 Robert De Wilde (NED) and #365 Mike Day (USA) are certainly nowadays always easy identified with their numbers.
In addition, the number 1-8 is reserved for the finalists of the 2009 UCI BMX World Championships, where Donny Robinson (USA) will display the #1 on the back of the rainbow jersey, while Sarah Walker (NZL) will stick to her familiar # 96.
To view the complete list of permanent numbers, hit this link.