2019 exam paper traffic planning

.pdf
School
Curtin University **We aren't endorsed by this school
Course
CE 4352
Subject
Civil Engineering
Date
Aug 9, 2023
Pages
7
Uploaded by MajorMoonPony10 on coursehero.com
UNIVERSITY OF MORATUWA Faculty of Engineering Department of Civil Engineering B.Sc. Engineering Semester 7 Examination CE 4352: TRAFFIC ENGINEERING & PLANNING Time Allowed: 2 Hours July 2019 ADDITIONAL MATERIALS ¢ Design notes will be provided INSTRUCTIONS TO CANDIDATES o This paper contains 4 questions in 3 Sections and consists of 7 pages. ¢ Answer all questions. e Answer Section A, ONLY on the Space provided and submit separately. e Provide separate books for Section B and Section C e This examination accounts for 70% of the module assessment. The total maximum mark assigned and attainable for this paper is 70. Marks allocated for each question & sections thereof are indicated in brackets. e This is a closed book examination. However, design charts will be provided. Assume reasonable values for any data not given in or with the examination paper, clearly stating on the script such assumptions made. If you have any doubt as to the interpretation of the wording of a question, make your own decision, but clearly state it on the script. All examinations are conducted under the rules & regulations of the University. Scanned with CamScanner
Section A INDEX NO. cvvuereerereernsenseensesersssssnssssssnonnas Question 1 (12 Marks) a) Results of a conflict study carried out near a junction is given in Table QI1-1. Identify which of these conflicts would be considered as a 'serious conflicts' using the information given in Figure Q1-1. . [5 Marks] Table Q1-1 ST L i W:'*--"' a0t S w1 12§ BRARENER L ot el Ay ok PRaTia bR e fre oy 0n 0l Ditnac daxd 'irfi'e.*' ."'cafi"w ) g fllet[EREE e SR SR BT RoRd |1 Road 1 Lo ni' T Date Conflict type Accident,| speed, S e PN SRR R AL 1T | | see. | km/h | 28 | 2013-09-03,07:09 Cyclist on red cyclist car 1,7 15 userl 3 user2 40 | 2013-09-03, 07:21 | Cydist on red cyclist Tgfléfl- 13 9 216 | 2013-09-04, 09:47 |Cydist on red Coyelist | car 11 ————————— A ———— s e e e 254 | 2013-09-05, 07:28 |Cydist on red cyclist | mc | 1,9 14 100 ' . - 90 80 70 Conflicting Speed, km/h Ln S 0,0 0.5 1,0 15 2,0 2,5 3,0 35 4,0 Time-to-Accident, sec. Fig Q1-1 (source: The Swedish Traffic Conflict Technique Manual) 4 v s rsvansennan LU . LR R F I RN R B N B R B ) LR LEC R B "an L] LRI . . " . . ' L] L] . R N N S N Y IR E Y WO d e r 0800008000008 0808800008000 0000010t T IR TEItNIItttrrRRAttREITA RN PN TARA IR AY I TR E AN I E RS ES oooooooooooo L R N R N R RN NN SR R R R R R I T lllll ".'.' ........ " ...... '..'.' .... ' ........ '.'..' ......... ' ....... 'l'.'.l..'.'..." ....... Il.'l..I ..... ". ccccc LI B B N R A "crr ' » o LI IR L . . LN ] L L ] L] LEUNE LB N B I B SN NN I Y T A s st bt de AR TR NN OPTREINCTIR RO SrresdbtT I P trda vt rr et i LR RURE B et e trree v LR A BT R Y O LR B U S BRI S | Scanne d with CamScanner
- b) State one advantage in carrying out a conflict study to evaluate safety performance on a road segment. [3 marks] ................................................................................................... ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo ............................................................................................................ ............................................................................................................ ¢) Propose one improvement to the existing Traffic Impact Assessment guidelines. [4 Marks] oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo ............................................................................................................ ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo ............................................................................................................ ............................................................................................................ ........................................................................................................... oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo Question 2 (13 Marks) a) Traffic flow on one leg of an intersection 1s described as follows, Vehicles arrival rate = A Vehicle departure rate during green time = Cumulative arrivals during time period t, A(t) = At Cumulative departures during time period t, D(t) = p 1 Effective red time =1 Effective green time = g Total cycle time,c =1+ g ed condition, derive a function to determine the time a) If the junction is in undersaturat [04 marks] required (denoted by to) to dissipate the queue at the junction. ........................................................................................................... ........................................................................................................... .................................................................. ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo Scanne d with CamScanner
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