Page 115 - Highway Engineering Handbook Building and Rehabilitating the Infrastructure

98 CHAPTER TWO

TABLE 2.11 Minimum Radii for Design Speeds from 15 to 80 mi/h (24 to 129 km/h) and
Superelevation Rates to 12 Percent (Continued)
eV 15 mi/h V 20 mi/h V 25 mi/h V 30 mi/h V 35 mi/h V 40 mi/h V 45 mi/h
d d d d d d d
(%) R (ft) R (ft) R (ft) R (ft) R (ft) R (ft) R (ft)
8.2 105 199 321 470 637 840 1070
8.4 100 190 307 452 615 813 1030
8.6 95 180 294 435 594 787 997
8.8 90 172 281 418 574 762 967
9.0 85 164 270 403 554 738 938
9.2 81 156 259 388 535 715 910
9.4 77 149 248 373 516 693 883
9.6 74 142 238 359 499 671 857
9.8 70 136 228 346 481 650 832
10.0 67 130 219 333 465 629 806
10.2 64 124 210 320 448 608 781
10.4 61 118 201 308 432 588 757
10.6 58 113 192 296 416 568 732
10.8 55 108 184 284 400 548 707
11.0 52 102 175 272 384 527 682
11.2 49 97 167 259 368 506 656
11.4 47 92 158 247 351 485 629
11.6 44 86 149 233 333 461 600
11.8 40 80 139 218 312 434 566
12.0 34 68 119 188 272 381 500
(Continued)