Memorandum - NHTSA

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IV-15 plane" to measure maximum allowable clearances. The block device can not pass between any gaps. S6.4.4.4. Horizontal Gaps - The SNPRM specifies that horizontal gaps are to be designed sucl I that they do not pass a sphere of 13 mm (0.50") diameter, with the lift at ground level or at flo )r level. S6.4.4.5 Platform Surface Openings - Some platforms employ steel mesh surfaces normally covered with a rubber mat. The exposed openings in the mesh can be an impediment to a wheelchair if too large. This Final Rule specifies that platform openings are to be designed such that they do not pass a sphere of 19 mm (0.75") diameter. S6.4.4.6 Edge Guards - The vertical gaps between the lift platform and the "moving" edge guards (those mounted to the platform structure) can not pass a sphere of 13 mm (0.50") diameter. For horizontal gaps between the lift platform and fixed edge guards (those mounted to the vehicle structure or lift frame) can not exceed a sphere of 6.5 mm (0.25") diameter. The maximum gap distances are to be measured when the lift is loaded with 272 kg mass (60C lbs.). <strong>NHTSA</strong> is adopting the Access Board's gap specifications and it is believed that all lift equipment can be installed to operate within these tolerances without further modifications or adjustments to either the lift design or installation. No additional manufacturer costs are anticipated due to this requirement.
Figure m-3 Allowable transition dimensions and slopes for platform entrance and exit at vehicle and ground level.
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 and 20: w-2 identifying the relevant lift c
Page 21 and 22: IV-4 MEASURE RED FLASHING BEACON OR
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: IV-14 Gaps, Transitions and Opening
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
Page 73 and 74: VI- 10 close a circuit and send a s
Page 75 and 76: VI-12 FMVSS No. 141 Lift Certificat
Page 77 and 78: VI- 14 Total Cost for Public-Use Li
Page 79 and 80: VII. LEADTIME VII-1 Since the lift-
Page 81 and 82: VIII-2 Table VIII-1 SUMMARY OF SBA
Page 83 and 84:
VIII-4 many private transit bus ope
Page 85 and 86:
VIII-6 Many hundreds of small busin
Page 87 and 88:
VIII-8 adaptive driving equipment f
Page 89 and 90:
VIII-10 Facts Book, 7.2 percent of
Page 91 and 92:
A- 1 REFERENCES 1. Americans with D
Page 93 and 94:
A-3 25. A Directory of UMTA-Funded
Page 95 and 96:
Figure 1 Dirgm Showing the Part8 of
Page 97 and 98:
5 Figure 2. Isometric View of Platf
Page 99 and 100:
PLATFORM DEFLECTION ANGLE DEFLECTIO
Page 101 and 102:
.. Lln UP, OUTER BARRIER UP LIFT MI
Page 103 and 104:
i I i I I I I i 1 i I ! j I I ~ __
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Memorandum - NHTSA

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