Impact of Urban Undersea Tunnel Longitudinal Slope on the Visual Characteristics of Drivers

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Item</td><td class="align_center">Information</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Length (m)</td><td class="align_center">7800</td></tr><tr><td class="align_left">Speed limit (km·h<sup>−1</sup>)</td><td class="align_center">80</td></tr><tr><td class="align_left">Lanes (m)</td><td class="align_center">3 × 3.75</td></tr><tr><td class="align_left">Longitudinal slope</td><td class="align_center">0.3%–4.0%</td></tr><tr><td class="align_left">Lighting facilities</td><td class="align_center">LED</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The information of Qingdao Jiaozhou bay tunnel.</div>

Journal of Advanced Transportation

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Table 1

Table 1: Impact of Urban Undersea Tunnel Longitudinal Slope on the Visual Characteristics of Drivers 