No person may drive a vehicle when there are more than three people in the front seat, which number shall include the driver.

9.36.040 Obstructing driver’s view or driving mechanism. A. No person may drive a vehicle when there are more than three people in the front seat, which number shall include the driver. B. No passenger in a vehicle may ride in such position as to interfere with the driver’s view ahead or to the sides, or to interfere with his control over the vehicle. C. No driver may allow his vehicle to be loaded in such a manner as to interfere with the driver’s view ahead or to the sides, or to interfere with his control over the vehicle. D. No person may drive any motor vehicle with any sign, poster, nontransparent material or an accumulation of snow, ice or frost upon the front windshield, side wings, or side or rear windows of such vehicle which materially obstructs, obscures or impairs the driver’s clear view of the street or any intersecting street. (CAC 9.36.040, 9.44.350; AO No. 78-72; AO No. 80-4; AO No. 89-52; AO No. 90-24)