The answer is "excessive speeding"
I would say that there are two causes for this:
1) people speed more often than do other vehicle driving related crimes: that's because they explain to themselves that they are in hurry and they hope they won't cause any harm
2) Speeding is very often tested by the police, because the police wants to curb this deadly behaviour.
Answer:
This phenomenon is called social facilitation.
Explanation:
Social facilitation refers to one's <em>tendency to </em><em>improve</em> his/her performance <em>when other individuals are present</em>. When the individual is alone, he/she has certain performance but having other individuals around tends to make this individual want to improve.
In this case, Cody is riding the bike at a leisurely pace but as soon as the gym gets less empty, she <em>improves her performance by the sheer presence of others. </em>
This process is called cultural diffusion. When diffusion takes place, a cultural item (a cultural idea or a cultural practice) disseminates from its place of origin or creation to other places. An example of this practice is the way Americans have embraced Chinese or Mexican food, mostly as a result of the migration of people from those countries into the United States.