Proposed Flyover at Metagalli Signal Junction on K R S Road

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Proposed Flyover at Metagalli Signal Junction on K R S Road

Gagana D

U.G Student Department of Civil Engineering

Vidyavardhaka College of Engineering Mysore 570 002, Karnataka, India

Anas Rehan

U.G Student Department of Civil Engineering

Vidyavardhaka College of Engineering Mysore 570 002, Karnataka, India

Manoj P

Assistant Professor

Lavanya T S

U.G Student Department of Civil Engineering

Vidyavardhaka College of Engineering Mysore 570 002, Karnataka, India

Anushree G S

    1. Student Department of Civil Engineering

      Vidyavardhaka College of Engineering Mysore 570 002, Karnataka, India

      Department of Civil Engineering Vidyavardhaka College of Engineering Mysore 570 002, Karnataka, India

      Abstract: Urban traffic congestion has become a serious concern for transportation professionals and traffic managers. Transportation infrastructure conjointly will increase with increased traffic demands, which comes to decreased Mobility. The traffic problem is being faced by Mysore people at a railway crossing in KRS road. People need to expect many minutes to meet up with this railway crossing. The main reason for this problem is that people wait at the signal and later at railway crossing which results in increased traffic volume. In order to find a solution to this traffic congestion, the capacities of the roads were evaluated by compiling data related to prevailing vehicular flows and collecting other supportive information. From the capacity calculations made from field data, it is evident that all the roads in the area would fail to cater to future traffic demands. And proposing a flyover was a suitable solution. Also for the planning of flyover bridge over the railway crossing, basic rules and standards in bridge design as per Indian standards code should be considered. Keeping the above points in view, a survey was conducted during this study to explore the possibility of planning and constructing a fly-over bridge at Metagalli signal junction and over the succeeding railway crossing in KRS road.

      Keywords Traffic Congestion; Flyover; Turning Movement.

      1. INTRODUCTION

        Rapid urbanization and industrialization have caused an unprecedented growth of vehicles in the world. Urban traffic congestion has a global phenomenon. Due to fast-growing vehicular traffic, old planned cities become congested road links, the intersection becomes saturated, busy and supply service is above its capacity [1]. An increase in income and in the absence of an insufficient, fast and reliable public transport system more and more people are shifting to personal vehicles in most of the cities, which results in the

        massive growth of the automobile population around the world. The reason for this traffic congestion is overcrowding at junctions due to the increasing density of traffic from all directions. At the intersection traffic jam problem may causes delay time and fuel consumption due to frequently stoppage of vehicles at a different intersection [2].

        Therefore, it requires effective controls to regulate the traffic and optimize delay and congestion of the traffic at the intersection. Space sharing intersection e.g. rotaries and pre- timed signals are widely used to control the intersections. Space sharing intersections are intended to give equal priority and permit continuous movement of all intersecting vehicle flows [3]. For higher traffic volumes, space sharing intersections such as rotary is not preferable due to the increase in congestion and overall intersection delay and conflicts. In the pre-timed signal, green times for the phases remain constant for the particular period of the day, although demand fluctuates during that period. This problem can be eliminated by providing flyover at the intersection. To avoid junctions and subsequent congestion, flyover or road over the bridge were designed which have partially solved the problem of congestion and accidents [4].

        A flyover is a bridge constructed along an intersecting highway over an at-grade intersection. It allows two-direction traffic to flow at free-flow speed on the bridge. The flyover is one of the methods for solving traffic problems at at-grade junctions on highways including capacity, congestion, long delay and queue length.

        People of Mysore are facing acute traffic problem at railway crossing road in KRS road. People need to wait for many minutes to go through this railway crossing. The study area deals with two obstacles making it difficult for easy

        movement of vehicles. People wait at the intersection signal and later at the railway crossing. In order to solve this traffic problem, planning and constructing a Flyover Bridge over the signal junction and railway crossing may be a viable option [5].

        Therefore, a feasibility study for planning a Fly-over Bridge over railway crossing was conducted keeping in view the following broad objectives: whether a fly-over can be constructed which is cost-effective, minimum demolition and safe and fast movement of the vehicle so that of traffic problem at Metagalli junction and railway crossing of KRS road can be solved.

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      2. METHODOLOGY

        Problem Identification

        Data Collection

        Data Analysis

        Problem Identification

        Data Collection

        Data Analysis

        Road Inventory Data

        Road Inventory Data

        Vehicle Registration Data

        Vehicle Registration Data

        Turning Movement Count

        Turning Movement Count

        Accident Data

        Accident Data

        Figure 1: Flow Chart showing sequence of Methodology

        1. Study Area

          To carry out research work, Metagalli Signal Junction, K R S road located in developing city located in Mysore, was selected. People have to wait long enough to pass through this railway crossing. The study area deals with two obstacles making it difficult for easy movement of vehicles. People wait at the intersection signal and later at the railway crossing.

          Plate 1: Arial view of the study area

          Figure 2: Map of Metagalli signal junction Mysore

        2. Inventory survey

          Result

          Result

          Road Inventory survey was carried on the selected road network. Road inventory data provides the details of the existing road network. A recorder noted down the details provided by observer and tape holders. The informations collected from road inventory survey are given in Table 1.

          Table 1: Inventory Data

          Component

          Towards KRS

          Toward VPS

          Towards Nanjangud

          Towards Columbia Asia

          Carriage way

          2

          lanes(3.5m)

          4 lanes (3.5m)

          11.10m

          11.15m

          Shoulder

          3m

          4m

          1m

          1.1m

          Road Sign

          No

          Yes

          Yes

          No

          Street Light

          No

          No

          No

          No

          Bus Stand

          Yes

          Yes

          No

          No

          Rikshaw stand

          Provided

          Not provided

          Not provided

          Provided

          Police station

          No

          No

          No

          No

          School

          No

          No

          No

          No

          Temple

          No

          No

          No

          No

          Divider

          Not provided

          1m

          2.8m

          2.8m

          Service Road

          Not provided

          Not provided

          Provided (6m)

          Provided (6m)

        3. Vehicle Volume Data

        To study the trend of vehicle growth, the volume of vehicles registered in the last seven years (2012 to 2018) were collected from two Regional Transport Offices located in East & West of Mysore city.

        Table 2: Vehicle Registered at RTO from 2012 to 2018

        Year

        Total vehicle Registered

        2012

        611429

        2013

        668658

        2014

        734536

        2015

        798580

        2016

        884437

        2017

        963237

        2018

        1577119

        (Source: RTO, Mysore)

        No of Vehices Registered in Mysore

        NO OF VEHICLES IN

        Lakhs

        NO OF VEHICLES IN

        Lakhs

        2000000

        1500000

        1000000

        500000

        0

        G. Traffic Simulation using Vissim

        The collected inventory data was given as input to draw the road links of the required study area. Later vehicle volume data input and required data was given and then traffic was simulated in Vissim 2D & 3D.

      3. RESULTS AND ANALYSIS

        2012 2013 2014 2015 2016 2017 2018

        Year

        Figure 3: Vehicle Volume Data

        D.Turning Movement count

        Turning Movement counts helps to design capacity analysis, traffic signal timing, and phasing, turn lanes, parking and turning restrictions. Turning movement count was conducted manually where each individual stood at each corner of the Metagalli signal junction. A multi-counter application was used in order to calculate a number of vehicles moving left, straight and right in an easy way. This counting was carried out for 1 week and during holidays and it was carried out during peak hours.

        1. Accident data

          The accident data of Metagalli Signal junction was collected from Vontikoppal Police Station. Accident data provides valuable information to control, regulate and manage the traffic more effectively.

          Table 3: Accident Data

          Intersection approach

          Existing Layout 135 s cycle length

          From

          To

          Average Delay(s)

          Average Queue Length(m)

          Vontikoppal Police Station

          Through

          125

          60

          Vontikoppal Police Station

          Left & Right

          125

          60

          Nanjangud Road

          Through

          130

          95

          Nanjangud Road

          Left & Right

          130

          95

          K R S

          Through

          132

          105

          K R S

          Left & Right

          132

          105

          Columbia Asia

          Through

          127

          80

          Columbia Asia

          Left & Right

          127

          80

        2. Level of Service

          Level of service (LOS) indicates the ease of comforts with which a traveler can travel on road. LOS is used to research roadways and intersections by categorizing traffic flow and distribution quality levels of traffic depending on performance measure like vehicle speed, density, congestion, etc.

          The level of service obtained at the signal intersection was F since control delay time exceeded 80secs.

          1. Delay Time and Queue Length

            The average delay and Average queue length caused for the vehicle at signal Junction was noted down. It was observed that maximum delay and maximum queue length is observed at vehicles moving from K R S road.

            Table 4: Average Delay and Average Queue Length

            Year

            Accident

            Type Of Accident

            Death

            Injuries

            2015

            3

            0

            3

            2016

            5

            1

            4

            2017

            8

            4

            5

            2018

            6

            1

            5

            Plate 2: Queue length along KRS Road

            Plate 3: Queue length along Vontikoppal Police Station Road

            Plate 4: Queue length along Nanjangud Road

            Plate 5: Queue length along Columbia Asia Road

            Plate 6: Queue length along K R S ROAD near Railway crossing

            Plate 7: Queue length along K R S ROAD near Railway crossing

          2. Average Turning Movement Count

            Average Turning Movement count was calculated by using the data collected for one week. It clearly gives an idea of an average number of vehicles moving along all four roads during peak hours.

            Figure 4: Average turning movement from 9am-10am

            Figure 5: Average turning movement from 10am-11am

            Figure 6: Average turning movement from 4pm-5pm

            Figure 7: Average turning movement from 5pm-6pm

          3. Components Specification of Proposed Flyover

            Extension of flyover Towards K R S: 560m Towards V P S: 370m Towards centre: 120m Width of the Flyover: 12m

            The carriageway is 5.5m on each side

            Lanes: 2 lane grade separator

            Gradient: Transverse gradient towards K R S and VPS is 3%

            Maximum height of flyover: 7m Stopping Sight Distance: 81.07m Over Taking Sight Distance: 287.05m

          4. Traffic simulation using Vissim Software

            The road links are drawn based on inventory data collected and it is showed in 2D in Figure 6. The traffic volume count is given as input and it is simulated in both 2D and 3D. Traffic simulation was carried out for 120sec and queue length is observed. Traffic simulation is shown in Figure 7.

            Figure 6: Road links in Vissim Software

            Figure 7: Traffic simulation using Software

      4. CONCLUSIONS

Based on the literature cited, the analysis made and results obtained, the following conclusions may be drawn

      • The queue length and delay time observed at railway crossing was 115m and 420 seconds

      • The maximum average queue length at K R S road was observed to be 105m and the maximum average delay time is 132 seconds

      • The proposed flyover can reduce the queue length of about 300m and also save the delay time of about 700 seconds

      • The proposed flyover can overcome traffic congestion

ACKNOWLEDGMENT

It is our privilege to express our sincere regards to Dr. DAYANANDA H S, Professor, Department of Civil Engineering, Vidyavardhaka College of Engineering, Mysore, for his valuable advice, constant guidance and encouragement during our research study.

REFERENCES

  1. Avijit Maji, Akhilesh Kumar Maurya, Suresh Nama and Prasanta

    K. Sahu Performance-based intersection layout under a yover for heterogeneous traffic. PP 119129, (2015).

  2. AuttakornSala Assessment of Traffic Flow Benefits of Flyovers. Journal of Society for Transportation and Traffic Studies (JSTS) Vol.4, PP 1-9, (2010).

  3. Mututantri P.L, Abeysinghe W.D.P, Wijewardena L.S.S and Weerasekera K.S Design of a Flyover and Roundabout underneath it to ease the Traffic Congestion at the Rajagiriya Junction. Engineer – vol. XLVIII, PP 33-47, (2015).

  4. Sofyan M. Sale, Sugiarto Sugiarto, Almira Hilal, and Dedek Ariansyah A study on the traffic impact of the road corridors due to flyover construction at Surabaya intersection, Banda Aceh of Indonesia AIP Publishing, PP 1-7, (2017).

  5. Kuldip.B.Patel, Anand D.Sapariya, and Pradeep P. Lodha Feasibility study for planning a flyover bridge over railway crossing at Vijalpore road, Navsari. Vol. 2, Issue 1, PP 174-179, (2015).

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