ADA Training Accessible Pedestrian Signal (APS) 2018 MnDOT

Transcription

1 ADA Training Accessible Pedestrian Signal (APS) 2018 MnDOT

2 APS and ADA APS is not currently an ADA Standard and is provided at the discretion of the Title II entity APS is recognized in the MnMUTCD, but engineering judgement factors into making a determination on whether or not to provide the accommodation. APS is recognized by the courts as a reasonable accommodation Considered a best practice by the FHWA

3 Why MnDOT Provides APS The Access Board s position demonstrates: APS is viewed as a reasonable accommodation for blind and low vision individuals APS will be included in the final rule for Public ROW The MnMUTCD included APS in advance of the final rule for Public ROW The cost is lowest when provided at the time of signal replacement or when the curb ramp replacement threshold is met Included in Transition plan to limit liability and risk

4 APS Design Considerations Design quadrant first MNMUTCD Criteria MnDOT Criteria Right-of-Way Needs Signal Pole and Cabinet Placement Crosswalk Orientation Plan Format Other design elements: Pork Chops/Islands, Rural APS Design Bumpouts with APS 2

5 MNMUTCD Push Button Criteria 10 ft. minimum button separation 42 in. button height Adjacent to landing 1.5 ft. to 10 ft. from back of curb 5 ft. max offset from crosswalk edge 3

6 Typical Push Button Location Max 4

7 Typical Push Button Location Grass Blvd 5

8 Typical Push Button Location Sidewalk at back of curb (Concrete Blvd) When sidewalk is at the back of curb the push button should be placed toward the back of walk. This improves the MAR and allows the push button to not be in the middle of the walk. 6

9 Typical Push Button Location 7

10 Maintenance Access Route (MAR) A MAR is the minimum clear distance between raised obstacles (i.e. push button stations, signal, lighting or utility poles, buildings, retaining walls, V curbs, hydrants, sign posts, etc.) needed for the mechanical removal of snow and ice. The MAR width is dependent on the anticipated snow and ice equipment utilized 6 for sidewalks and 8 10 for shared use paths. The MAR is only required on the same route as a PAR, does not need to meet 2% cross slope requirements, and should be a paved surface at signalized quadrants. 8

11 MAR & PB Centered on Landing 2 6 Min 9

12 MAR Takes Priority Push Button Offset from Grade Break Min Preferred min Maintain a 6.0 Maintenance Access Route

13 Push Button in Middle of Walk

14 Signal Control Points Push Button Table 0.75 Signal min. Control is the Points distance a PB8-2 push button and PB6-1 can be from a grade break 2 min preferred 12

15 Signal Control Points Push Button Table Landing 4 long ramp designed 6 long ramp constructed 13

16 ROW needs at Signalized Intersections (grass blvds) 14

17 ROW needs at Signalized Intersections (no blvd) 15

18 Signal Pole in Middle of Trail 16

19 Signal Pole in Middle of Ramp 17

20 Signal Pole in Middle of Landing 18

21 Signal Pole in Middle of Landing 19

22 Cabinet in Middle of Walk 20

23 Control Points 21

24 Example APS Intersection 22

25 Example APS Intersection Show all proposed and existing signal components: hand holes, cabinets, push buttons, pedestals, signal poles Must be shown on the ADA detail sheet (20 30 scale) Proposed hand holes should be located outside the PAR 23

26 Floating Crosswalk 24

27 Floating Crosswalk PB2 1 Located on a ramp grade break, too close to the road, adequate MAR? PB2 2 Located in middle of walk Shift Signal Pole 25

28 Floating Crosswalk Offset to crosswalk greater than 5 ft. Crosswalks intersects each other in roadway The distance between buttons will be less than 10 ft. 26

29 Crosswalk Striping Crosswalks shall be striped in a straight alignment between the outside edge of detectable warning, with no kinks unless shown kinked in the plan. 27

30 Detectable Edge Best Practice Mill pavement and/or edge of sidewalk Wayfinding for visually impaired users 28

31 Urban Median Islands 12 min. (measured from back of curb to back of curb) is needed on the short leg to allow enough room to build pedestrian ramps and landings. 29

32 Urban Median Islands Porkchop Islands should have a shared landing with the alignment shown on the left. 30

33 Urban Median Islands 31

34 Rural Pad A rural pad is a depressed corner with no curb and gutter that flows away from the road to the ditch 32

35 Rural Median Islands Typically should be kept rural (flat) so the existing drainage patterns are maintained 33

36 Typical Push Button Placement Combined Directional Ramps with APS typically work well at large bump-outs with compound radii due to the required 10 min. push button (PB) separation needed, and the 2 min. PB setback from grade breaks. 34

37 APS Example Intersection 35

38 APS Example Intersection 36

39 APS Example Intersection 37

40 APS Example Intersection 38

41 APS Hardware & Details Push Button Station Pole Mounting Adaptors Push Button Spacers (Saddle Adaptors) Signal Plan Detail Pedestal Foundation Standard Plate 39

42 Discontinued Push Button Station - Detail 40

43 Discontinued Push Button Station - Detail 41

44 Current APS Push Button Station - Detail MUTCD MnDOT 42

45 APS Push Button Station 43

46 APS Push Button Station 44

47 APS Push Button Station 45

48 APS Push Button Station 46

49 Push Button on Signal Pole The APS push button shall meet the vertical horizontal and crosswalk skew requirements. Height and Reach - 10 max horizontal reach - 42 push button height 47

50 Pole Mounting Adaptor

51 Push Button on Pedestal When a push button is placed on a new or previously existing pedestal pole, the push button shall be installed using 3 APS Push Button Spacers (Saddle Adaptors). 49

52 Saddle Adaptors on Pedestals 2 ½ 50

53 MnDOT Signal Plan Details APS PB Pole Mounting Adaptor & Spacers 51

54 Standard Plate No. 8112I New Pedestal Foundations shall be constructed flush to within ¼ of Landing. 52

55 Push Button on Pedestal Prosecution of Work (ADA) Concrete for new foundation shall be placed either with or after the landing concrete is placed. 53

56 Signal Design Construction Staging 10 Max 54

57 Signal Design Construction Staging Proposed signal poles should be placed behind existing signal poles to allow the existing poles to be active during construction. They should be placed 5 min. away from the existing pole location. Signal pedestal being relocated usually need temporary signal pedestals as to not disrupt vehicular traffic. 55

58 Rectangular Rapid Flashing Beacon (RRFB) Push Button needs to meet all APS requirements including locator tone and audible message Audible message should say: Yellow lights are flashing. Message should be spoken twice For RRFB s, push buttons shall not use vibrotactile indications or percussive indications All push buttons on MnDOT ROW need to be made accessible (not exclusive to RRFB s) FHWA issued interim approval of RRFB effective 3/20/

59 Questions? 57