A. Intersections: No sign, fence, wall, hedge, or shrub planting which obstructs sightlines shall be placed or permitted to remain at any driveway/street intersection or street/street intersection, as provided in table 11-15-10, "Sight Distance Requirements", of this section.
Posted Speed Limit (mph) | (B) Distance Required For Left Turn From Driveway/Intersection | (B) Distance Required For Right Turn Or Crossing From Driveway/Intersection | |||||
(A) Driver's Eye From Edge Of Roadway | Entering 2-Lane (Feet) | Entering 4-Lane (Feet) | Entering 5-Lane (Feet) | Entering 2- Lane (Feet) | Entering 4-Lane (Feet) | Entering 5-Lane (Feet) | |
Posted Speed Limit (mph) | (B) Distance Required For Left Turn From Driveway/Intersection | (B) Distance Required For Right Turn Or Crossing From Driveway/Intersection | |||||
(A) Driver's Eye From Edge Of Roadway | Entering 2-Lane (Feet) | Entering 4-Lane (Feet) | Entering 5-Lane (Feet) | Entering 2- Lane (Feet) | Entering 4-Lane (Feet) | Entering 5-Lane (Feet) | |
25 | 14.4 | 280 | 295 | 315 | 240 | 260 | 280 |
30 | 335 | 355 | 375 | 290 | 310 | 335 | |
35 | 390 | 415 | 440 | 335 | 360 | 390 | |
40 | 445 | 470 | 500 | 385 | 415 | 445 | |
45 | 500 | 530 | 565 | 430 | 465 | 500 | |
50 | 555 | 590 | 625 | 480 | 515 | 555 | |
55 | 610 | 650 | 690 | 525 | 565 | 610 | |
60 | 665 | 705 | 750 | 575 | 620 | 665 | |
Design Parameters: Exiting driver's eye height is 3.5 feet above pavement. Top of object on the street equals 3.5 feet above pavement.
Left turn sight distance is required for each direction (left and right).
Source: AASHTO "A Policy On Geometric Design Of Highways And Streets", 2001.
B. Shade Tree Exception: Shade trees are permitted to overhang the specified triangles, provided that all branches are not less than eight feet (8') above the street level. (Ord. 6124, 6-28-2010)