Transportation Engineering presentation Topic: 1.Roadway Condition Survey 2. Traffic Volume Study

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Ahsanullah University of Science And Technology
Department of Civil Engineering
Course No: CE 452
Course Name: Transportation Engineering Lab-II
4th Year 2nd semester (Section: B)

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Group Members I.D. No
Tasrufa Tahsin 11.01.03.074
Md Selim Mia 11.01.03.075
Faruk Patowary 11.01.03.079
Rumana Samad 11.01.03.082
Aqib Jishan Khan 11.01.03.112
Raqib Al Mahmood 11.01.03.115
Mizanur Rahman 09.01.03.002
Farhan Shihab 10.01.03.085
Group No: 03

5.  Roadway condition survey:
A condition survey is the process of collecting data to determine the
structural integrity, distresses, skid resistance, and overall riding
quality of the pavement.
Provides the most valuable information for roadway performance analysis
Vital in order to forecast roadway performance, anticipate maintenance and
rehabilitation needs
Establish maintenance and rehabilitation priorities, and allocate funding
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6. Objective
• Geometric layout of roadway
• Geometric layout of intersectionGeometric condition
• Road surface condition
• Location and width of side road
• Pedestrian crossing facilities
Operating Condition
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7. Scope
Geometric
Design of
Roadway
Dynamic
Traffic
Management
Traffic
Control
Purposes
Traffic
Planning
Improvement
of Level of
Service of the
Road
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8. Purpose of roadway condition survey
To make a summary of the overall condition of the
roadway
To make an historical record of roadway performance
and maintenance practices
To justify warrant of traffic control devices
To study effectiveness of introduce schemes diagnosing
given situation and finding appropriate situations
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Alligator Cracking
It is a structural pavement failure that may be caused by
traffic overload, inadequate design thickness, base or sub-
grade failure, poor drainage, or a combination of these
factors.
Rutting
Rutting is a surface depression that typically occurs in the
wheel path(s) or at the edge of the pavement. Rutting
represents a structural failure.
Patching
Patching is only an indication of the amount of surface area
that has received some type of maintenance repair.
Some Important Definitions

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Raveling
Raveling is identified by the loss of aggregate particles
from the pavement surface.
Random or Grid block cracks
Random block or grid block cracks divide the pavement
into rough rectangular or poly-angular pieces.
Transverse cracks
Transverse cracks are those considered to extend
greater than ¾ the width of the pavement generally
perpendicular to the centerline of the pavement.
Some Important Definitions

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Bleeding
Bleeding is a film of bituminous material on the
pavement surface that creates a shiny, reflective
surface. Bleeding is caused by excess asphalt
cement in the mix and/or low air void content.
Skid Resistance
Skid resistance, or surface friction, indicates the
ability of the pavement surface to provide
sufficient friction to avoid skid related safety
problems.
Some Important Definitions

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Pedestrian Refuge Island
Crosswalks may also include pedestrian refuge island
Potholes
Potholes usually develop in a surface that is either
cracked, raveled or both.
Some Important Definitions

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Zebra Crossing
Its distinguishing feature is alternating dark
and light stripes on the road surface, from
which it derives its name. A zebra crossing
typically gives extra rights of way to
pedestrian.
Ladder Crossing
Some Important Definitions

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1. Walking Survey
2. Windshield Survey
3. Walking +
Windshield Survey
Manual
1. Video Camera
2. Automatic Survey
Vehicle
3. Distance measuring
instrument
Automatic
Methods of Data Collection

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Manual Survey Methods
Walking Survey :
 Provides the most precise data about the condition
of the roadway.
 surveys are completed by a rater who is trained to
rate distresses.
Windshield Survey :
 survey is completed by driving along
the road or on the shoulder of the
road.
 Allows a greater amount of coverage
in less time.
Walking + Windshield Survey :
 Good method to achieve detailed pavement distress data

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Automated Survey Methods
VIDEO CAMERA :
 Observe service condition of roadway.
AUTOMATED
PAVEMENT CONDITION
SURVEY VEHICLE
DISTANCE MEASURING INSTRUMENT
 Electronic instruments that precisely measure distances
 They are easy to install

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Key Steps Of Roadway Condition Survey

18. Location of The Survey Area 18

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Panthopath Intersection Russel Square Intersection

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Geometric Condition of the Roadway
 Road Length = 970 meter
 Road Width
Road Width varies along the length
of the road

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 Number of Lanes
From Panthapath to Russel Square = 3 Lanes
From Russel Square to Pathapath = 3 Lanes
 Median Dimension
Median dimension was taken near Panthapath
Signal.
Width = 1.6 meter = 5.25 feet
Height = 0.508 meter = 20 inch
 Shoulder Dimension
Shoulder was measured in the midblock segment in front
of a shop (Mr. Baker)
Width = 7 feet
Height = 6 inch
Geometric Condition of the Roadway

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Russel Square Intersection
E to W W to E
Distance Between
Median to Channel
21.83 feet 22.5 feet
Channel Length 40 feet on straight 72 feet on straight
42 feet on curve 75 feet on curve
Channel Width 17.5 feet 55 feet
Distance of
Channel from
Footpath
13.5 feet 21.5 feet
Pedestrian Refuge Length 10 feet Length 20 feet
Width 12 feet Width 15 feet
Panthapath Intersection
E to W W to E
Distance Between
Median to Channel
39 feet 38 feet
Channel Length 22 feet on straight 24 feet on straight
26 feet on curve 25 feet on curve
Channel Width 21 feet 11.5 feet
Distance of
Channel from
Footpath
14 feet 13.5 feet
Pedestrian Refuge Length 11 feet Length 12 feet
Width 10 feet Width 10 feet
Geometric Measurement of Channel/Island,
Pedestrian Refuge
(Russel Square Intersection)
Geometric Measurement of Channel/Island,
Pedestrian Refuge
(Panthapath Intersection)

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Side Road No.
Chainage Starting
from Russel 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.
Chainage Starting
from Green Road
(m)
Width (m)
1 52.92 0.97
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
Location and Width of Side Roads
(Panthapath→Russel Square)
Location and Width of Side Roads
(Russel Square→Panthapath)
Operating Condition of the roadway

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Different Features of Roadway
Bottleneck Cause
Direction
E to W W to 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 0
Density of Bus Stop 0 1
Density of Speed Breaker 0 0
Density of Side Friction
Operating Condition of the roadway

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 Road Side Land-use Pattern
Road side land used pattern was
highly dense commercial
developed area in the range of 2
storied up to 24 storied.
Operating Condition of the roadway

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Loss of Road Width due to Parking and other Non-motor Activity

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Loss of Road Width due to Parking and other Non-motor Activity
Roadside Tea stall , Dustbin and Construction work reduces Road Width

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Loss of Road Width due to Parking and other Non-motor Activity

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Parking at the Intersections create side friction
Condition of the Intersections

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Side Road causes Density of Side Friction

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Condition of Median

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Pedestrian Crossing Facilities

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 Layout of Street Light
o Pattern: Central, Two heads/Double arms
o Spacing: 100 feet
o Total number: 33
Two solar panel street light were found on the
median near the road opening at BFEW
Center at one side and “Shopno” Departmental
Store at other side of the road.

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Operating Condition of the Roadway
Condition of Footpath
Construction materials and Fruit shop on Footpath causes Side Friction

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Surface Condition of the Roadway
Patching is found in many places

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Surface Condition of the Roadway

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Surface Condition of the Roadway
Large Block Crack form on Road Potholes on the Intersections

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Signal Condition

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Conditions of Signs and Markings

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Elevated and Depressed Manhole on Road Causes Side Friction
Number of Manhole found in the road (E to W direction) = 9

41. Recommendation
 Geometric condition
• Pedestrian Refuge Island Should not too high
• The geometric layout of the roadway was not exactly
designed following road standards. There was a
continuous lack of symmetry throughout the length
of the road, especially at the intersections
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Recommendation
 Operating condition
 Extra facilities for blind peoples and peoples who use wheelchair should be provided
 The footpath should be cleared, clean and in good condition so that pedestrian can walk and use
footpath properly
 Proper signs and markings on road is highly recommended
 Retro reflective sign post panels should be provided
 Roadside parking should be prevented and prohibited
 U-turn should be restricted and minimized

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 Non Motorized Vehicles (NMV)
Shouldn’t Be Allowed In This
Road
 Road Side Parking Should Be
Banned or Toll May Be
Collected To Discourage
Parking
Recommendation
 Road Side Non-motor activities
Should Be Banned or
Prohibitted

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 Scattered And Haphazard
Pedestrian Crossing Should Be
Discouraged And Prohibited
 Foot Over Bridges Should Be
Constructed At Important Points
For Pedestrian Crossings
 Zebra Crossing Should be
Provided
Recommendation

45.  Limitations
 Limited and unskilled enumerators.
 Time and Recourses was Limited
 Insolent Surveyors
 Manual method of survey, which is unreliable
 Proper enforcement of traffic regulation is not obtained.
 Professional photographer was not available
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