Michelle P wrote:

We used to taxi our CRJ 200's around 20kts. Usually on one engine. Two
at idle, no passengers the thing will taxi at 40kts.
Michelle (former instructor mechanic)

How not to taxi:

http://www.cargolaw.com/2003nightmare_NW165%20arrive.html

http://www.amfanatl.org/Pages/11_Safety&Standards/NWAAirbusLGARpt11903.htm