(

a) Except as otherwise provided in subdivision (b), a person whose driving record shows a violation point count of four or more points in months, six or more points in months, or eight or more points in months shall be prima facie presumed to be a negligent operator of a motor vehicle. In applying this subdivision to a driver, if the person requests and appears at a hearing conducted by the department, the department shall give due consideration to the amount of use or mileage traveled in the operation of a motor vehicle. (b)

(1) A class A or class B licensed driver, except persons holding certificates pursuant to

Section 12517, 12519, 12523, 12523.5, or 12527, or an endorsement issued pursuant to paragraph (2) or (5) of subdivision (

a) of

Section 15278, who is presumed to be a negligent operator pursuant to subdivision (a), and who requests and appears at a hearing and is found to have a driving record violation point count of six or more points in months, eight or more points in months, or or more points in months is presumed to be a prima facie negligent operator. However, the higher point count does not apply if the department reasonably determines that four or more points in months, six or more points in months, or eight or more points in months are attributable to the driver’s operation of a vehicle requiring only a class C license, and not requiring a certificate or endorsement, or a class M license.

(2) For purposes of this subdivision, each point assigned pursuant to

Section shall be valued at one and one-half times the value otherwise required by that

section for each violation reasonably determined by the department to be attributable to the driver’s operation of a vehicle requiring a class A or class B license, or requiring a certificate or endorsement described in this section. (

c) The department may require a negligent operator whose driving privilege is suspended or revoked pursuant to this

section to submit proof of financial responsibility, as defined in

Section 16430, on or before the date of reinstatement following the suspension or revocation. The proof of financial responsibility shall be maintained with the department for three years following that date of reinstatement.