Research Article

Road Network Vulnerability Analysis Based on Improved Ant Colony Algorithm

Table 2

Utility and vulnerability of arcs at different traffic demands.

Demand levelArc 1Arc 2Arc 3Arc 4Arc 5

100% 7.152 12.072 4.776 7.152 4.776
1.004 2.208 1.103 1.203 1.104
0.577 0.065 0.631 0.622 0.600

110% 8.448 12.170 5.782 8.448 5.782
1.009 2.215 1.106 1.207 1.108
0.499 0.058 0.552 0.552 0.514
0.135 0.109 0.125 0.112 0.143

120% 9.734 12.326 6.739 9.734 6.739
1.015 2.226 1.111 1.212 1.115
0.421 0.047 0.477 0.483 0.432
0.270 0.280 0.244 0.223 0.279

130% 11.014 12.574 7.613 11.014 7.613
1.025 2.245 1.118 1.219 1.125
0.344 0.029 0.408 0.414 0.358
0.404 0.548 0.354 0.335 0.404

140% 12.230 12.869 8.501 12.230 8.501
1.038 2.269 1.128 1.229 1.139
0.270 0.009 0.337 0.348 0.282
0.531 0.862 0.465 0.440 0.530