Control Measures for Automobile Exhaust Emissions in PM2.5 Governance

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2"> </td><td class="align_center" colspan="3">B</td></tr><tr class="thead"><td class="align_center">Travel mode</td><td class="align_center">1 car</td><td class="align_center">2 buses</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left" rowspan="2">A</td><td class="align_center">1 car</td><td class="align_center">(U1, U1)</td><td class="align_center">(U3, U4)</td></tr><tr><td class="align_center">2 buses</td><td class="align_center">(U4, U3)</td><td class="align_center">(U2, U2)</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The implementation of the limit.</div>

Discrete Dynamics in Nature and Society

tab2

Table 2

Table 2: Control Measures for Automobile Exhaust Emissions in PM2.5 Governance 