Memorandum - NHTSA

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Performance Requirements 1. Threshold Warning Signal (S6.1)3 rv-3 This requirement is designed to warn deboarding lift users, at the lift door, that the lift platfonil is not at vehicle floor level. Located on the floor of the transit or paratransit bus at the lift door opening, the platform threshold area is 457 mm (18 in.) deep measured from the edge of the li it door and as wide as the lift door. Except in cases where the platform is loaded over the vehicl,: floor such as with a personal rotary lift, a visual or audible warning is to activate: (1) if portions of a passenger’s body or mobility aid is on the “platform threshold area” and (2) if the lift platform is more than 25 mm (1”) below the “floor reference plane”. Once a warning signal is activated, it must continue to operate until the “platform threshold area” is vacated, or the lift i!; returned to the vehicle floor level. (See Figure IV-1) If a visual warning is used to comply (S5.1.l), it is to consist of a flashing red beacon with 20 candela (minimum) power and be visible to a wheelchair user backing onto the lift. The flash rate specified by (S6.1.4) is between 1 to 2 Hz. Typically, the warning light would be located inside the bus or MPV inside the lift door opening. The warning beacon accommodates heariiig impaired and deaf pedestrians standing near the lift. The red beacon’s intensity is to be measur,:d 914 mm (3’) above the centroid of the platform threshold area as shown in Figure IV-1. The alpha-numeric in parentheses refers to the pertinent section of the regulatory text
IV-4 MEASURE RED FLASHING BEACON OR MEASURE AUDIBLE WARNING 2 85dBA -\ LIFT REFERENCE PLANE PLATFORM THRESHOLD AREA CENTROID PLATFORM THRESHOLD AREA (SHADED) LIFT DOOR EDGE - FLOOR k -LIFT PLATFORM CENTERLINE I t- I %3 I I \ I LIFT DOOR WIDTH, W PLATFORM THRESHOLD AREA AUDIBILE WARNING MEASUREMENT POINT (S5.L ) FIGURE IV-1
Page 1 and 2: Subject: From: To: U.S.Department o
Page 3 and 4: TABLE OF CONTENTS Summary..........
Page 5 and 6: s-2 The annual number of persons in
Page 7 and 8: 11. BACKGROUND 11- 1 Guidelines per
Page 9 and 10: 11-3 and strength; control panel le
Page 11 and 12: 111-2 Generally, there is very litt
Page 13 and 14: 111-4 Table 111-1 Preliminary Natio
Page 15 and 16: 111-6 The NEISS database lacks the
Page 17 and 18: 111-8 Public Transit & Paratransit
Page 19: w-2 identifying the relevant lift c
Page 23 and 24: IV-6 Acceleration is to be measured
Page 25 and 26: IV-8 FIGURE IV-2 :i a la Y t Permir
Page 27 and 28: IV-10 and vehicle size. This requir
Page 29 and 30: v-12 7. Prepare test block fnction
Page 31 and 32: IV-14 Gaps, Transitions and Opening
Page 33 and 34: Figure m-3 Allowable transition dim
Page 35 and 36: IV-18 sliding or being driven over
Page 37 and 38: v-20 traveling too fast, in the for
Page 39 and 40: WC Retention Overload Test 67.13) I
Page 41 and 42: IV-24 The lift is raised to the flo
Page 43 and 44: N-26 (2 square inches) applicator a
Page 45 and 46: N-28 sufficient to adequately illum
Page 47 and 48: IV-30 lack of follow-up training. N
Page 49 and 50: IV-32 16. Backup Operation (S6.9) -
Page 51 and 52: IV-34 This “looked but did not se
Page 53 and 54: W-36 e Clearance test block (S7.1.3
Page 55 and 56: IV-38 Structural Integrity, to iden
Page 57 and 58: IV-40 NHTSA assumes that the large,
Page 59 and 60: V. BENEFITS v-1 Serious injuries an
Page 61 and 62: v-3 retention strength test, CG and
Page 63 and 64: v-5 objective terms which should le
Page 65 and 66: VI-2 subject to the ADA requirement
Page 67 and 68: VI-4 averaged 35,000 units per year
Page 69 and 70: VI-6 In order to make an estimate o
Page 71 and 72:
Cost Estimates VI-8 New Lift Hardwa
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VI- 10 close a circuit and send a s
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VI-12 FMVSS No. 141 Lift Certificat
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VI- 14 Total Cost for Public-Use Li
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VII. LEADTIME VII-1 Since the lift-
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VIII-2 Table VIII-1 SUMMARY OF SBA
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VIII-4 many private transit bus ope
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VIII-6 Many hundreds of small busin
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VIII-8 adaptive driving equipment f
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VIII-10 Facts Book, 7.2 percent of
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A- 1 REFERENCES 1. Americans with D
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A-3 25. A Directory of UMTA-Funded
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Figure 1 Dirgm Showing the Part8 of
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5 Figure 2. Isometric View of Platf
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PLATFORM DEFLECTION ANGLE DEFLECTIO
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.. Lln UP, OUTER BARRIER UP LIFT MI
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i I i I I I I i 1 i I ! j I I ~ __
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Memorandum - NHTSA

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