presentration 2
TRANSCRIPT
DEPARTMENT OF CE
Roadway condition survey
COURSE TITLE : TRANSPORTATION ENGINEERING SESSIONAL II COURSE NO : CE 452
COURSE TEACHER : MINHAJUL ISLAM KHAN
NUZHAT AZRA
GROUP 2Group members Student ID
ZOBAER SALEHEEN SHAURAV 11.01.03.100
IMRAN UDDIN MAHMUD 11.01.03.106
SIAM MOHAMMAD AZMIH 11.01.03.107
ZAKIRUL ISLAM 11.01.03.108
MD. KAMRUZZAMAN MAHFUZ 11.01.03.109
MAKSHUD AL SHABIB 11.01.03.110
KAZI GOLAM MOSTOFA 11.01.03.116
MD. NAZMUL ISLAM 10.01.03.103
ABDULLAH IBNE FARUK 10.02.03.105
PRESENTATION OUTLINE
1. INTRODUCTION
2. OBJECTIVE OF STUDY
3. SCOPE OF STUDY
4. METHODOLOGY
5. DATA COLLECTION
a. GEOMETRIC CONDITION
b. OPERATION CONDITION
6. DATA ANALYSIS
7. RECOMMENDATION
INTRODUCTION
A ROADWAY CONDITION SURVEY IS DONE BY VISUAL
INSPECTION OF A ROADWAY. A ROADWAY CONDITION SURVEY IS
THE PROCESS OF COLLECTING DATA TO DETERMINE THE
STRUCTURAL INTEGRITY, DISTRESSES, SKID RESISTANCE, AND
OVERALL RIDING QUALITY OF THE PAVEMENT.
OBJECTIVE OF STUDY
To draw detailed layout of roadway and intersection.
For qualitative observation of potholes, elevated
or depressed manholes, speed breakers etc.
To determine loss of effective width at different
locations due to loading or unloading, illegal
parking, construction utility etc.
SCOPE OF THE STUDY
DESIGN AND PLANNING PURPOSE
IMPROVEMENT PURPOSE
DYNAMIC TRAFFIC MANAGEMENT AND PRIORITY SCHEDULE
ACCIDENT RATE COMPUTATION
METHODOLOGY OF ROADWAY CONDITION SURVEY MANUAL METHOD WALKING SURVEY
WINDSHIELD SURVEY
WALKING AND WINDSHIELD SURVEY
AUTOMATIC METHOD VIDEO CAMERA
DISTANCE MEASURING INSTRUMENT
GIS METHOD
AUTOMATED ROAD ANALYZER
MANUAL METHOD
WALKING SURVEY
• Done by walking down by the side of
the pavement by a group of people.
• Provides the most correct data.
• Time consuming.
ABDULLAH RECORDING DATA
WINDSHIELD SURVEY
• Systematic observation is made from a moving vehicle.
• Useful when particular section of road segment is observed.
• Time saving.
Survey process by Windshield method
WALKING AND WINDSHIELD SURVEY
• Better method than the
single application.
• Achieve maximum
pavement data and
complete pavement
surveys.
• Require both technological and human activity.
Picture of walking and wind shield survey
AUTOMATIC METHOD
VIDEO CAMERA
• Observe service
condition.
• Generally attached on
the post in the street.
• Doesn’t work at night.
Roadway condition survey using street camera
AUTOMATED ROAD ANALYZER
• Technically complex vehicle.
• Attached with sensor machine.
• Take photo as well as distance.
Road way condition survey by vehicle
DATA COLLECTION
• Observation – Roadway Condition Survey• Method – Manual • Equipment – Camera, Tape etc.• Location – Panthapath to Russell Square • Date - 14.12.2014 • Day - Sunday• Time – 11.00 am -4:00 pm• Weather condition – Sunny, Gentle Breeze • Duration – 5 hrs. (short count)• Number of Enumerator - 09
GEOMETRIC CONDITION OBSERVATION
Geometric layout of the roadway
Road Length = 970 meter
Road width = Road width varies along the direction starting from Panthapath to Russell Square.
Distance starting from panthpath(m) Width(m) of left approach Width (m) of right approach Lane0 11.7 9.8 350 14.8 11.8 4
100 9.6 9.5 3
150 9.4 9.2 3
200 9 9.2 3250 8.5 9.9 3300 8.7 8.6 3350 8.7 8.6 3400 8.6 8.6 3450 8.4 8.9 3500 9.3 9.9 3550 9 8.8 3600 8.6 8.8 3650 7.5 8.7 3700 9 8.3 3750 8.7 8.5 3800 7.2 8.6 3850 8.4 8.5 3900 11.5 8.5 3950 17.8 11 4
Median Dimension
Click icon to add picture
Median dimension was taken near panthapath signal
Width=1.6 meters = 5.25 feet
Height= .508 meters = 20 inch
Shoulder Dimension
Shoulder width was measured in the midblock section in front of a shop (Mr. Baker)
Width= 7 ft.
Height = 6 inch
Geometric layout of the intersection
Geometric measurement and position of Channel/Island, pedestrian refuge corner radius
Russell Square Intersection
Russell Square Intersection E-W W-E
Distance between median to channel 21.83 feet 22.5
Channel length40 feet on straight 72 feet on Straight
42 feet on curve 75 feet on curve
Channel Width 17.5 feet 55 feet
Distance from channel to footpath 13.5 feet 21.5 feet
Pedestrian refugeLength 10 feet Length 20 feet
Width 12 feet Width 15 feet
Panthapath Intersection
Panthapath Intersection E-W W-E
Distance between median to channel 39 feet 22.5 feet
Channel length22 feet on straight 24 feet on Straight26 feet on curve 25 feet on curve
Channel Width 21 feet 11.5 feet
Distance from channel to footpath 14 feet 13.5 feet
Pedestrian refugeLength 11 feet Length 12 feetWidth 10 feet Width 10 feet
Dimension and Location of pedestrian refuge Click icon to add picture
Besides intersection and near
opening of the road, to
facilitate the pedestrian
crossing, pedestrian refuge
was provided. 6 inch height
provided in pedestrian refuge.
Surface condition
Surface condition near high
speed location Zebra crossing
At intersections
• Qualitative observation of Potholes , elevated / depressed manholes , speed
breakers etc. was counted and recorded .
Operating Condition Observation
Location and Width of side roads
Along the direction Panthapath to Russell Square
Side road No. Chain age starting from Russell
square (m)
Width (m)
1 49.6 3.6
2 80 4.1
3 229.6 3
4 299.5 6
5 350 1.9
6 592.3 3
7 783 4.5
8 892.2 2
Side road No. Chain age starting from Panthapath (m) Width (m)
1 52.92 .97
2 63.13 2.61
3 86.88 1.9
4 109.25 3.19
5 278.9 4
6 311.9 4
7 357.91 3
8 372.61 3.31
9 379.41 3.5
10 447.92 4
11 665.92 4
Along the direction Russell Square to Panthapath
Road side land-use pattern
The roadside land use pattern is highly dense with commercially developed area including Bank,
Hospital , School, Market, Shopping Mall, Showrooms etc. in the range of 2 storied up to 24 storied.
Loss of road width Due to Parking & Parking Barrier
• Due to Passenger Loading/Unloading , Para transit & NMV Activity
• Presence of Dustbin/ Trash Disposal & Construction Materials
• Cutting , Digging ,Repair & Maintains work & Some Illegal Activities
Pedestrians Crossing Facilities
Opening Median
Due to facilitate the pedestrian crossing, opening was
provided on top of the median at some intervals in
the mid block section. Near panthapath signal median
height was found to be approximately 20 inch. For
facilate as a pedestrian refuge ,this height was
reduced to 4-5 inch.
• Pedestrian Refuge
Besides near intersection and opening of the road, to facilitate the pedestrian crossing, pedestrian refuge was provided.
Location & Types of Traffic Control Device
Road Sign & Marking
Sign :Traffic signs or road signs are signs erected at the side or above roads to give instructions or provide information to road users. In our survey road we found sings in both intersection.
MarkingTypes of marking
Centre Line, Pavement Edge Lines, Stop Line, Pedestrian Crossings, Word Marking/Message, Divisional Arrow
• Signal
Traffic signs control the flow of traffic, warn you of hazards ahead, guide you to
your destination, and inform you of roadway services.
Primary traffic signal
Secondary traffic signal
Tertiary Traffic Signal
Special Filter Signal
o Pedestrian Crossing Signal
o Timer signal
Layout of Street lighting System
Sodium Light Center, Two head/Double arms
Solar Panel Light
DATA ANALYSIS
Detailed Layout of Roadway & Intersection Layout of Roadway, where geometric alignment and side roads are shown
Layout of intersection Panthapath intersection’slayout when East-West & North-South traffic flowoccurs. And also conflictare shown
Russell Square intersection
Stages of traffic movement at Panthapath IntersectionThree Stages Flow
Stage 1
Stage 2
Stage 3
Stages of traffic movement of Russell Square Intersection
Here Also three stages traffic flow occurs
Stage 1
Stage 2
Stage 3
Location of Bottleneck Due to indiscriminate bus stopping/Stand in both intersection bottleneck is
arises
Due to Littering-car parking through the roadway bottleneck causes though the roadway
At side roads opening bottleneck causes
Para transit & NMV activities in front of commercial centers like Hospital, Shopping mall and also opening of side roads Bottleneck creates.
Due to cracking of edge road bottle neck also arises.
Road Light Alignment
Sodium light layout system mostly common in Dhaka city. The clear distance
between two street lights post or lamp post are approximately 100 feet. Total number of street light found was 33.Through the roadway
We also found some Solar panel
Light System which may provided by
Sponsor's in front of Square Hospital.
Control DeviceSome of Control device found through the road way.
Pedestrian Crossing Signals found in both intersections
Density of Side Friction’s
Different feature of roadway Bottleneck Cause Direction
E-W W-E
Density of side road 8 11
Density of opening 2 2
Density of Pedestrian crossing in median 24 24
Density of Street light 33 33
Density of Manhole 9 15
Density of Dustbin 0 1
Density of Bus stops 0 1
Density of speedbraker 0 0
Some other obstruction on the main road are indiscriminate goods loading and unloading on the road, disturbed traffic flow due to non motorized vehicles entrance like rickshaw, van, cycle and presence dustbin on the road. It should be must monitored
Loading or unloading goods Non motorized vehicle Dustbin blocks almost one road lane
Erased road marks at intersections at channel head, Line Division, and pedestrian crossing & Leder crossing signs are erased, invisible traffic signal can create problem.They must be monitored
Erased road marks/Sign at intersection At Channel Head
Invisible Leder crossing Invisible Pedestrian crossing
At intersections the Ghost islands are blocked or not facilities the pedestrian and its head are broken
Road sign’s are covered by poster or erased and broken or disable street lights are present in roadway . Some V-notch’s are broken & V-notch sign & marking are erased
Covered & Erased Sign & Slotted Sign Unmarked V-Notch
Surface condition of the road is not fair enough due to various kinds of road cracking which decreases the skid resistances of the road and of the road way
fatigue crack Ravelling
Some traffic law breaking
RECOMMENDATIONS
The surface of roadway was not good enough and the medians were not geometrically right. The marks on the road were invisible. So our recommendation is that we should be careful about regular maintenance of road to avoid unwanted incidents such as accidents.
The signs we observed on the roadway were old and not only covered by posters but also broken. So replacing these old sign plates with new ones is highly recommended.
We found different kind of small shops on the footpath or shoulder. So it is recommended that Dhaka City Corporation should take essential step to clear the footpath so that pedestrian can move easily.
There were no facilities for blind people ,people who use wheelchair and people who are not normal. So extra facilities for these people are recommended.