The driver of an authorized emergency vehicle is exempt from

Chapter 2 (commencing with

Section 21350),

Chapter 3 (commencing with

Section 21650),

Chapter 4 (commencing with

Section 21800),

Chapter 5 (commencing with

Section 21950),

Chapter 6 (commencing with 22100),

Chapter 7 (commencing with

Section 22348),

Chapter 8 (commencing with

Section 22450),

Chapter 9 (commencing with

Section 22500), and

Chapter 10 (commencing with

Section 22650) of this division, and

Article 3 (commencing with

Section 38305) and

Article 4 (commencing with

Section 38312) of

Chapter of Division 16.5, under all of the following conditions: (

a) If the vehicle is being driven in response to an emergency call or while engaged in rescue operations or is being used in the immediate pursuit of an actual or suspected violator of the law or is responding to, but not returning from, a fire alarm, except that fire department vehicles are exempt whether directly responding to an emergency call or operated from one place to another as rendered desirable or necessary by reason of an emergency call and operated to the scene of the emergency or operated from one fire station to another or to some other location by reason of the emergency call. (

b) If the driver of the vehicle sounds a siren as may be reasonably necessary and the vehicle displays a lighted red lamp visible from the front as a warning to other drivers and pedestrians. A siren shall not be sounded by an authorized emergency vehicle except when required under this section.