Please read Chapter 9 from the book attached and answer the following questions.PLEASE ANSWER THE FOLLOWING QUESTIONS.1. DEFINE THE ELEMENTS OF A CLASS 1, CLASS 2 AND CLASS 3 TWO-LANE HIGHWAY.2. WHAT ARE THE THREE MEASURE USED TO DESCRIBE SERVICE QUALITY FOR A TWO-LANE HIGHWAY? WHICH OF THE MEASUREMENTS ARE USED TO DESCRIBE LEVEL-OF-SERVICE FOR CLASS 1, CLASS2 AND CLASS 3 HIGHWAY?3. DESCRIBE THE TRAFFIC CHARACTERISTICS ASSOCIATED WITH EACH OF THE SIX LEVELS OF SERVICE FOR TWO-LANE HIGHWAYS.