Answer: Irony
Step-by-step explanation:
Irony is defined as statement or words that are stated to convey the exact opposite meaning or message behind the statement.It is usually used for humor in developing content, sarcastic situation , conveying opposite attitude etc.It does not hurt other person's feeling through verbal statements.
According to the question,Dawson is using irony in verbal form to describes the safe driving incident.He is giving example of traffic cop to convey the opposite message of safe driving importance by inducing humor in his speech.