| Yes there are. I have never heard of a taxi speed limit imposed by airport authority the way we find them on roads, however. In turn, the "Ground Ops Forum" may not be best suited to provide you with answers.
The usual limits stem from the construction/design of each aircraft type and, sometimes, from operator's company policy.
For instance, the A319-A321 family has a taxi design limitation of max 20 knots in a turn with mass above 76000kg. This must not be exceeded, ever. The A319 cannot achieve such mass, A320 rarely will as this is close to the absolute max. mass, A321 for charter will go above the restricting mass easily. To an un-trained eye, all three aircraft may look fairly similar from outside. There's also a max speed for taxi with deflated tyre(s), but let's not go there just yet.
One other pilot book, called the Flight Crew Training Manual gives advice how to operate the aircraft most efficiently and safely. This is for guidance only, but it is pilot's best friend. FCTM suggests that for sharp turns, speed should be 10 kt and indeed, on most occasions, 20 kt is unconfortable. On slippery taxiways even dangerous.
For straight taxi, there is no limitation as obviously very high speeds are achieved during the take-off roll. FCTM suggests to let the aircraft accelerate to 30 kt, then slow down to 10 using single application of the brakes, which helps to reduce wear. Taxying above 40 kt becomes quite uncomortable as well. Needless to say, if taxying for departure, at 72 kt the emergency runway stopping mechanism activates and aircraft would stop very abruptly causing much bruising.
FD
(the un-real) | 
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