中 * * 政治局审议并通过《关于实行党政领导干部问责的暂行规定》，实行党政领导干部问责，加强领导干部管理和监督，请结合材料2归纳概括实行问责制的作用及其面临的一些问题。要求：概括准确，分析透彻，条理清晰，字数不超过250字。

A—3-1eg Interchange
B—peak period
C—absolute speed limit D—acceptable gap
E—access
F—accident
G—accident cause
H—advanced public transportation services
I—air resistance
J—annual average daily traffic
K—area traffic control
L—automatic vehicle monitoring system
M—banning of turning movement
N—belt Highway
O—bike lane

( )可接受间距( )重点交通管制