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AHsanullah university of science & technology

Department of CIVIL Engineering

Presentation on

ROADWAY CONDITION

SURVEY

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Course No : CE-452Course Name : Transportation Engineering Lab.-II

Under the Supervision ofMinhajul Islam Khan

Assistant professor, Department of Civil Engineering, AUST

&Sadia Mohsin

Lecturer, Department of Civil Engineering, AUST

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PRESENTED BY(GROUP-5)

TARIKUL ISLAM 13-01-03-038RAKIBUL ISLAM 13-01-03-039MD. AHASAN – UL – HAQUE (HRIDOY)

13-01-03-040APU ROY 13-01-03-043NUSRAT JAHAN 13-01-03-044SHAHIDUZZAMAN MUNSHI

13-01-03-050MAHMUDUL HASNET 13-01-03-051TONMOY KUNDU 11-02-03-033

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Introduction• The methodology used for preparation of Road Condition is

called Road Way 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.• It is necessary to know the condition of the road every year

for doing proper maintenance works.• Accordingly road condition surveys is done to find out the

condition, and should be done every year at a particular time.

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OBJECTIVES

GEOMETRIC CONDITION • Determining the geometric layout of the roadway and point

out any drawbacks of the following general protocol.• Geometric layout intersections • Scientifically study and observe pavement surface

condition

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OBJECTIVES

OPERATING CONDITION • Location and width of side roads • Road side land-use pattern • Loss of road width • Pedestrian crossing facilities • Locations and type of control devices • Layout of street lighting system

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PURPOSE OF ROADWAY CONDITION SURVEY

• To assess the historical record of pavement performance & maintenance• To justify warrant of traffic• Effectiveness of introduced scheme & so on.

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SURVEY METHOD

MANUAL METHOD• Walking survey• Windshield survey• Walking and windshield survey AUTOMATIC METHOD• Video camera• Distance measuring instrument• GIS method• Automated road analyzer

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MANUAL METHOD

WALKING SURVEY• Systematic observations made on foot• Done by a walks down the side of the pavement.• Provides the most correct data.• Time consuming

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WINDSHIELD SURVEY• Systematic observation made from a moving vehicle. • Useful when particular section of road segment is

observed. • Time saving.

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WALKING AND WINDSHIELD SURVEY

• Better method than the single application• Achieve maximum pavement data and complete

pavement surveys. • Require both technological and human activity.

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AUTOMATIC METHOD

VIDEO CAMERA• Observe service condition. • Attached on the post in the street. • Doesn’t work at night.

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DISTANCE MEASURING INSTRUMENT

• Electronic instruments that precisely measure distances ranging from 10s of feet to thousands of miles.• They are easy to install.

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GIS METHOD• A geographic information system (or GIS) is a system

designed to capture, store, manipulate, analyze, manage, and present spatial or geographic data.

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AUTOMATED ROAD ANALYZER

• Technically complex vehicle. • Have sensor machine attached. • Take photo as well as distance.

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Survey procedure

Reconnaissance Survey Design Piloting

Problem IdentificationAdjustment

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DATA COLLECTION

• Observation : Roadway Condition Survey • Method : Photographic Survey Method (Manual Walking) • Equipment : Tape, Chalk, Camera etc.• Location : Panthapath to Russell Square• Date : 05 January, 2017• Time : 10:00 am -12:00 am• Weather condition : Bright & Sunny

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DATA ANALYSIS

• Road Width

The variation of width and number of lanes along Panthapath to Russell SquareMeasured length started

from Panthapath to Russell square (m)

Width (m)E to W approach

Width (m)W to E approach

Lane

0 11.7 9.8 350 14.8 11.8 4

100 9.6 9.5 3150 9.4 9.2 3200 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 11.0 4

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PANTHAPATH TO RUSSELL’S SQUARE ROAD

• From the previous table it is seen that the Roadway width is not Uniform…• Roadway width should be

uniform along the roadway because the drivers tend to overtake when they are passing through a smaller width to a larger width.• Thus in a result vehicle-

vehicle conflict may occur

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INTERSECTIONS

Though the intersections of Russel Square & Panthapath were signalized, traffic is maintained by the traffic police due to obsoleteness of the signal.

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MEDIANThe median condition of panthapath to Russel square is average Poor median condition

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MEDIAN

Planned median width is about 14’ but we found the median width of our survey road is about 5.25’.

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CHANNELS

Both intersections are channelized

Channels

There are also have Refused island for Pedestrian

Channels

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POOR CONDITION OF MEDIAN & ISLAND

• The channels near the Panthapath and Russell square intersection are not in very good shape. They’re heavily subjected to edge damage.• The main purpose of the

refused island is not be properly gained due to these obstacles.• Immediate measures should

be taken.

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OPERATING CONDITION : TRAFFIC SIGNAL

Secondary Signal

Primary Signal

Tertiary Signal

Panthapath & Russel Square junctions are signalized junction but traffic is controlled by Traffic Police

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STREET LIGHTING

In Panthapath to Russel Square the street lights condition are not well managed.

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TRAFFIC FLOW PATTERN

•Traffic at Panthapath intersection is controlled with 4 phase where left turn is always free for each phase

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TRAFFIC FLOW PATTERN

Traffic at Russel Square intersection is controlled with 3 phase

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IRREGULAR TRAFFIC FLOW

Sometimes large number of traffic or irregular traffic is problematic for the traffic police to handle. This may lead to disruption of the traffic flow.To remedy this through traffic study should be conducted and traffic signals should be redesigned to meet the current needs. Strict law regarding following traffic signals should be created and its proper implementation needs to be ensured.

Congestion due to disobeying traffic signal

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OBSTRUCTED SIGNAL, SIGN & MARKINGS

• Signals are obstructed by trees near Russell square.

• Signs & markings are used for the traffic safety. Obstructed & damaged traffic signs and markings represent the poor condition of roadway.

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BLOCKED FOOTPATHS

Construction materials on footpath

Pedestrians have to walk on roadway due to the placement of dustbin on the footpath

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BLOCKED FOOTPATHSFootpaths are mainly used for the pedestrian movement. Due to these type of blockage they have to use the main road. This sows down the traffic stream and sometimes may lead to catastrophic accidents.

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SIDE FRICTION( SIDE ROAD)

Side Road (Entry) Bottleneck due to Entry

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SIDE FRICTION

Density of side friction mainly depends on pedestrian crossing, Dustbin, Bus stop illegal Parking On Road side etc.Temporary bottleneck may create due these type of ObstructionEffective Width of the Roadway is also decreased

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ROAD OBSTRUCTIONS

Obstructions like elevated or depressed Manhole, Broken manhole, polished Aggregate etc. greatly affect the smooth traffic flow

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OBSERVATIONS OF ROAD SURFACE

• Road Surface condition of Panthapath to Russel Square is not in very good Condition• Raveling, Pot holes &

Alligator Crack are Observed in many locations

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LOSS OF WIDTH DUE TO SIDE FRICTIONS

• Parking• Trash disposal/Dustbin• Side Market • Pedestrian Crossing• CNG & Taxi Cab Parking• Roadside Cutting• Wide Branches of tree

Wide branches of trees & poor surface condition

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ILLEGAL PARKING

• Sometimes vehicles are Parked illegally ignoring the traffic Signs • Reduction Effective Width of the Roadway, Temporary Bottleneck, side friction occurs

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ILLEGAL CROSSING

Rickshaw and vans ignoring bollards and crossing road

illegally

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PEDESTRIAN CROSSING FACILITY

1.Opening on Median 2.Opening on refused island3.Zebra crossing

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Sometimes people do not follow the

marking&

Sometimes drivers do not follow the traffic

markings

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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.

• Lighting is very important in night time Driving. We observed the bad Condition of Street Lights. Regular Observations & maintenance Should be done.

• The signs & markings we observed on the roadway were old and covered by posters & also broken. So replacing these old sign plates with new ones is highly recommended.

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RECOMMENDATIONS

• Obstruction in footpaths and refuge was a very major observation. The space allotted for footpaths and refuge have been taken over by small shops, construction materials, obstacles such as goods display of adjacent shops, etc.• So it is recommended that Dhaka City Corporation should

take essential step to clear the footpath so that pedestrian can move easily• Presence of lot of side roads is another problem for this

road as they always interrupted the main flow of the road.

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RECOMMENDATIONS

• Recommendation for Road Side Land use pattern:• 1.it was a densely developed area for commercial

establishments, residential buildings, Hospitals etc.• 2.The main Purpose of the Panthapath link road was to

distribute Traffic among the primary roads.• That’s why service/frontal road may be provided for the

local traffic to reduce the traffic volume in this link road.• Bus lay-by & Use of Public Transport is also recommended

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RECOMMENDATIONS

• U-tern & Side Road Entry or Exit, Illegal Parking should be restricted to Reduce Bottleneck• Good Pedestrian Facilities should be provided like facilities

for Blind people.• Strict usage of activity laws must be ensured. • Increase the measure of fine to constrain individuals to

tolerate the law • •Increase the quantity of authorities accountable for

activity control operation

THANK YOU

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ANY Questions ?