21453. (a) A driver facing a steady circular red signal alone shall stop at a marked limit line, but if none, before entering the crosswalk on the near side of the intersection or, if none, then before entering the intersection, and shall remain stopped until an indication to proceed is shown, except as provided in subdivision (b)
你的理解是最後一個分句把整個(A)都except過去。
21453. (a) A driver facing a steady circular red signal alone shall stop at a marked limit line, but if none, before entering the crosswalk on the near side of the intersection or, if none, then before entering the intersection, and shall remain stopped until an indication to proceed is shown, except as provided in subdivision (b)
這是你的個人理解,但是在statute interpretation下,當一個條文有多個解釋,法院將采取最合理的解釋而不是采取不符文理的解釋。
尤其是(b)規定: after stopping as required by subdivision (a), 裏麵說了stop, 表示製法者的原意是我第一個解釋, 而不是你的解釋。就是說(b)也是要按(a)的要求停的。
en.wikipedia.org/wiki/Statutory_interpretation