The athletes push the bobsleigh reaching speeds of about 40km/h before they jump onto it. Once the crew is loaded, the pilot steers the sled through twisting, high speed turns and straightaways where top speeds can reach over 130km/h. The success of a team hinges on the initial pushing phase, as well as the steering and the materials of the sled (the sled and blades). Maximum sled weight of the combined team and equipment is specified, and the temperature of the runners measured prior to the competition to deter warming.
If the bobsleigh overturns, but all members of the team have passed the finish line inside it, the descent is considered valid.