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PDF (DX094490.pdf) - White Rose Etheses Online

PDF (DX094490.pdf) - White Rose Etheses Online

i ACKNOWLEDGEMENTS I

i ACKNOWLEDGEMENTS I would like to express my thanks to Dr. R. Ashworth for suggesting the current topic of research and for invaluable help and guidance over the duration of the study. I would also like to thank Dr. Maher of the Statistics Department of the Sheffield University for important assistance on several aspects of this study. A lot of friends helped me in the collection of data, and computing difficulties, especially Dave Drew, John Rylance, and Alan Griffiths. Also for the same reasons and for continuous support I thank Carol J. Askew. The typing was performed very efficiently by Mrs Norma Parkes, to whom I am most appreciative. Last, but not least, I express my gratitude to my parents, Leandros and Vera Natsinas, for the extraordinary support they gave to me over the lengthy periods of my study.

  • Page 1: A COMPUTER SIMULATION STUDY OF THE
  • Page 5 and 6: iii delay was obtained for combinat
  • Page 7 and 8: APPENDIX 2 2a 2b APPENDIX 3 V 4.5.2
  • Page 9 and 10: vii 6.5 The Effective Number of Lan
  • Page 11 and 12: CHAPTER 1 INTRODUCTION
  • Page 13 and 14: ative ways of improving the perform
  • Page 15 and 16: 4. No restrictions were introduced
  • Page 17 and 18: 2.1 Introduction 6 Roundabouts as a
  • Page 19 and 20: especially in urban areas. 8 At the
  • Page 21 and 22: 10 Swindon, Sheffield, Halesowen, H
  • Page 23 and 24: 12 Since then a number of alternati
  • Page 25 and 26: following equation 2Q1 = Q1/1100 e
  • Page 27 and 28: 16 were assumed to be equal. A valu
  • Page 29 and 30: 18 Blackmore reported that the high
  • Page 31 and 32: 20 Philbrick concluded that the new
  • Page 33 and 34: 22 the priority rule was introduced
  • Page 35 and 36: 24 2.8 The Estimation of Delay The
  • Page 37 and 38: £ = p /( l - p). variable) by: 26
  • Page 39 and 40: 28 q = 1O8w(1+) (1w L / /\\ e En(c'
  • Page 41: 30 EXAMPLES OF SMALL ROUNDABOUT LAY
  • Page 44 and 45: *. c'... o .uou, 4.' c.0 l .- >1 a)
  • Page 46 and 47: B. 4 way Scissor N.\\\\ Junction. -
  • Page 48 and 49: a, a, a L 37 11 / Steady state / Tr
  • Page 50 and 51: Introduction 39 The development of
  • Page 52 and 53:

    41 flow at the Arundel Gate entry.

  • Page 54 and 55:

    43 all three sites. It should be no

  • Page 56 and 57:

    El (0 a) H 0 04 H N 4-JO) rj '-1 a)

  • Page 58 and 59:

    47 TABLE 3.3 Entry Total flow Flow

  • Page 60 and 61:

    49 Figure 3.2 Castle Square Roundab

  • Page 62 and 63:

    LI ' iA •ãE / /\ L. 1/,' 51 ,-.-

  • Page 64 and 65:

    4.1 Introduction 62 The computer pr

  • Page 66 and 67:

    64 Cooper et al (1977), Wennell and

  • Page 68 and 69:

    66 q: the major road (circulating)

  • Page 70 and 71:

    68 and their method estimates the p

  • Page 72 and 73:

    70 that the simplified models (1) a

  • Page 74 and 75:

    72 on roundabout performance during

  • Page 76 and 77:

    74 (iv) after estimating q 5 and L,

  • Page 78 and 79:

    76 This is useful in providing a di

  • Page 80 and 81:

    78 Some aspects of T-junction opera

  • Page 82 and 83:

    80 However, the values he reports a

  • Page 84 and 85:

    82 normality assumption of any line

  • Page 86 and 87:

    as following: 84 "Let y, y 2 , ...,

  • Page 88 and 89:

    86 the pattern of the circulating f

  • Page 90 and 91:

    88 Armitage and McDonald's two-line

  • Page 92 and 93:

    90 vehicles than larger ones. Two w

  • Page 94 and 95:

    92 section, this did not allow a co

  • Page 96 and 97:

    94 the abstraction of the accepted

  • Page 98 and 99:

    96 between the predictions for each

  • Page 100 and 101:

    98 counted, while interval ones des

  • Page 102 and 103:

    100 increases. At high flow situati

  • Page 104 and 105:

    102 Roundabout were analysed to pro

  • Page 106 and 107:

    104 the study sites. The headways p

  • Page 108 and 109:

    14 15 18 19 22 23 30 31 40 41 106 T

  • Page 110 and 111:

    0 .r.I 4) a) 4) a) 0 "-I 4) a) 4.)

  • Page 112 and 113:

    (1) (ii) a 110 TABLE 4.4 all values

  • Page 114 and 115:

    112 TABLE 4.6 NT TN a 1 2.07 2.27 2

  • Page 116 and 117:

    1 2 34 5 6 78 9 10 11 12 13 14 15 1

  • Page 118 and 119:

    1 2 3 4 5 6 7 8 9 10 2.07 1.91 1.88

  • Page 120 and 121:

    1 2 3 4 5 6 7 8 9 0 2.95 2.94 2.68

  • Page 122 and 123:

    120 TABLE 4.14 T on N N on T mean 2

  • Page 124 and 125:

    122 TABLE 4.17 iTonN NonT mean 2.53

  • Page 126 and 127:

    1 2 3 4 5678 9 0 L 1.99 1.80 1.89 1

  • Page 128 and 129:

    126 TABLE 4.23 AMM WRNT SRTN SRNT i

  • Page 130 and 131:

    128 TABLE 4.25 Site Lane (sec) a(se

  • Page 132 and 133:

    130 TABLE 4.28 Arrivals per 15 sec

  • Page 134 and 135:

    0 12345678 9 10 11 12 13 14 ^15 0 .

  • Page 136 and 137:

    0.00 0.10 0 . 20 0 . 30 0.40 0.50 0

  • Page 138 and 139:

    0. 4 N g N 0 5.0 10.0 io . 04 I- -J

  • Page 140 and 141:

    -C 0) - 10 o C U C U U U -c U> '4-.

  • Page 142 and 143:

    0 (0 4.0 3. 5 3. 0 II 0 (U c 2.5 -J

  • Page 144 and 145:

    I.-) U1 (0 4.0 31,5 3. 0 2.5 I' cL

  • Page 146 and 147:

    1. 0. 0. 0:0. .a •0. .0 0 0. 140

  • Page 148 and 149:

    5.1 Introduction 146 Computer simul

  • Page 150 and 151:

    R0 = 5, N = 16, then 148 = 5 * 5 mo

  • Page 152 and 153:

    150 9 approach road resulting in a

  • Page 154 and 155:

    1 j-J'. 1. The entering vehicles ca

  • Page 156 and 157:

    154 real time would take 10 to 40 s

  • Page 158 and 159:

    156 and at what simulated time deta

  • Page 160 and 161:

    starJ jnitidl Va] uesl cjereration

  • Page 162 and 163:

    6.1 Introduction 160 The simulation

  • Page 164 and 165:

    162 and gap-acceptance parameters.

  • Page 166 and 167:

    164 on the above range is shown on

  • Page 168 and 169:

    166 500, 1000, 2000, 3000 veh/hr Q

  • Page 170 and 171:

    168 were assumed constant. Therefor

  • Page 172 and 173:

    170 and around capacity. Ashworth &

  • Page 174 and 175:

    0 4J U) cc N C) O C' N .ON Lrc cc-c

  • Page 176 and 177:

    C.. N -c > >. 4., 0 (0 L) 4., (0 -J

  • Page 178 and 179:

    4, 0 3.5 o 3.0 C -J 4- 0 I -a E 0 >

  • Page 180 and 181:

    C -J '4- 7 o C- -Q z > 4. 0 3. 5 4.

  • Page 182 and 183:

    (. -c N -c0> 500 480 460 440 420 40

  • Page 184 and 185:

    0 -J IL 1050 1000 950 900 850 800 1

  • Page 186 and 187:

    C- -c N-c 11 > 0 360 340 320 300 28

  • Page 188 and 189:

    C) I, >.' a C, (0 I 0) > (0 2 1 0 I

  • Page 190 and 191:

    0 I. >' -J a 0) C- > -J 60 50 40 30

  • Page 192 and 193:

    0 (tj >.' (U -J a 0') (U C- > -J CU

  • Page 194 and 195:

    0 I. > C C.. > -J 0 50 40 30 20 192

  • Page 196 and 197:

    \ -J 0 I > -J 2 1 0 - 0 194 Qi = 50

  • Page 198 and 199:

    0 Q) > 0 0 80 70 60 50 40 30 L 10 I

  • Page 200 and 201:

    0 a, a, II >\ -J a, a, 0) C. a, > -

  • Page 202 and 203:

    0 90 ao 70 60 50 40 30 >.' -J 20 10

  • Page 204 and 205:

    60 40 20 202 02 a 200 ec 500 = 1.50

  • Page 206 and 207:

    0 (0 60 40 204 Q2 ci = 300 sec , 50

  • Page 208 and 209:

    0 (0 60 40 206 Bet a Q1 = 500 veh/h

  • Page 210 and 211:

    0 60 40 01 = 2000 veh/hr 02 = 1000

  • Page 212 and 213:

    0 60 40 11 210 Alpha 01 = 500 veh/h

  • Page 214 and 215:

    0 60 40 11 212 ALpha Q1 = 2000 veh/

  • Page 216 and 217:

    214 CHAPTER 7 CONCLUSIONS

  • Page 218 and 219:

    216 operation below and around capa

  • Page 220 and 221:

    218 REFERENCES Adams, W. F., 1936.

  • Page 222 and 223:

    220 Department of the Environment,

  • Page 224 and 225:

    222 Pearson, R.H. and M.G. Ferreri,

  • Page 226 and 227:

    224 APPENDIX 1 THE OBSERVED DATA CO

  • Page 228 and 229:

    c 7 4 226 0 4 24 Gp ;::e, c Fourc A

  • Page 230 and 231:

    228 APPENDIX 2 THE COMPUTER SIMULAT

  • Page 232 and 233:

    230 APPEM)IX 2b Computer Simulation

  • Page 234 and 235:

    530 44 542 46 540 42 41 40 45 4? 23

  • Page 236 and 237:

    154 IF (R1(N0,41-1).EO.2) OCT13 154

  • Page 238 and 239:

    236 580 IF (KCH.EO.li WRITE(6,580)

  • Page 240 and 241:

    91 110 IF (l1-IO.0T.0) 6010 110 111

  • Page 242 and 243:

    19t2 LNUI2,113) 240 N2 Pf2 107 N2=N

  • Page 244 and 245:

    242 APPENDIX 3 DIFFERENCE IN DELAY

  • Page 246 and 247:

    0) 0 0) 244 0 ci) 0 -I '-I ' (') cc

  • Page 248:

    a) 0 246 a) a) CD Lfl Q -I (V) o' r

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