Classification and Evolution Analysis of Key Transportation Technologies Based on Bibliometrics

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Super-key</td><td class="align_center">Key</td><td class="align_center">Relative key</td><td class="align_center">Lower-key</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">EV, machine learning, vehicle technology, and so on</td><td class="align_center">GA, AI, traffic control, and so on</td><td class="align_center">Fuzzy logit, statistical analysis, 4G, and so on</td><td class="align_center">Simulation, scheduling, network technology, and so on</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Technologies and their classification (partial).</div>

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Table 3

Table 3: Classification and Evolution Analysis of Key Transportation Technologies Based on Bibliometrics 