Memorandum - NHTSA

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IV-7 Tillman and Figure W-2taken from that referen~e).~Measurements are to be made at the fixc:d operator position at the lift controls and anywhere on the lift platform. VRTC measured 85 dBA ambient noise at 305 mm (1’) from a Braun Lift electric motor and 7 3 dBA and 75 dBA, respectively, for a TMC bus lift being raised and interior ambient noise wit1 L the engine running. Also, VRTC measured the ambient noise levels at 6 bus stops and found iiin average of 79 dBA. The 75 dBA level has been used by the San Diego Transit Corporation in its lift specifications and was adopted by FTA in their guidelines for both passive and active lifts. The 85 dBA warning signal outside the bus would be completed within 4-8 seconds and woulcl. not interfere with, or contribute to, the 80 dBA maximum allowable equipment operating nois : level. This maximum noise level does not apply to the deploying or stowing aspects of the lif I. equipment when the lift platform is unoccupied. A maximum lift noise level is not contained the Access Board’s final guidelines. It is believed that all lift equipment would comply, hence 1 io cost impact is anticipated. 4 The Vehicle Research and Test Center (VRTC) is located in East Liberty, OH and is part of <strong>NHTSA</strong>’s Office of Research and Development.
IV-8 FIGURE IV-2 :i a la Y t Permirlblo Dirtanco htwmon 8 Spoaku and Lidmnu8 .. Copied from H u m a n a n Haby W.E. Woodson, 8. Tillman. and p. Tillman Figure IV-2 Permissible Distance between a Speaker and a Listeners [Speaker to Listener Distance (feet) versus Ambient Noise Level dB(A). Reference: Human Factor Design Handbook, Second Edition, W.E. Woodson, B.Tillman and P. Tillman.]
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: IV-6 Acceleration is to be measured
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
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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