bhopal brt

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    Bhopal BRTMicro Simulation Analysis

    and 3D VR Simulation

    MEDULLA-SOFT , THE REAL VIRTUAL

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    Project Overview

    24 km BRT Corridor

    48 bus stops

    18 km of dedicated corridor

    Central Lane BRT

    Bus stops preferably placed at intersections

    Bus stops staggered before signals at either

    side

    MEDULLA-SOFT , THE REAL VIRTUAL

    Click here for the promotional Video

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    Scope of Work Medulla Soft

    CREATION of 3D VR ENVIRONMENT

    Replication of the entire 24 km network in 3D

    Can be integrated with Driving Simulator for

    Driver training

    CREATION ofPROJECT OVERVIEW VIDEO forBMC

    CREATION of MICRO SIMULATED 24 kmNETWORK to UNDERSTAND NETWORKPERFORMANCE on BRT IMPLEMENTATION

    MEDULLA-SOFT , THE REAL VIRTUAL

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    Simulation Methodology

    Traffic volumes by time, traffic profile, directionaldistributions taken from survey provided by BMC

    Vehicle types taken include cars, Buses, three

    wheelers, two wheelers, cycles Designs based on drawings provided by Egis

    consulting and include all side roads andjunctions, bus stops

    Intermediate links balanced to match volumes Dwell times at bus stops, existing travel times

    corroborated with operating agencies

    MEDULLA-SOFT , THE REAL VIRTUAL

    Click here for introduction to

    simulation

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    Key Issues Considered

    BRT in left lane v/s central lane

    Positioning of bus stops

    Performance of the BRT network Transitions between mixed traffic and BRT

    Impact of Vehicle Actuated Signals and Transit

    Priority

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    BRT Left v/s Central lane Signal complexities increased conflicting

    movements in left lane Left lane BRT will always interfere with free left

    movements, which are integral to improving trafficefficiency how does this translate to efficiency atintersections?

    Merging issues What is the impact at non signalized intersections?

    Pedestrian issues Understanding impact on pedestrian signal times

    required in the two models

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    BRT Left v/s Central lane

    Signal complexitiesCentral Lane BRTLeft Lane BRT

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    In the case of right turn for BRT buses, a left lane BRT model conflicts all major directions of traffic,

    Whereas a centre lane BRT model allows at least one major direction of traffic to flow, while also allowing

    two additional free lefts

    Right movement of buses

    FMV Movement

    Bus Movement

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    Central Lane BRTLeft Lane BRT

    BRT Left v/s Central lane

    Signal complexities

    MEDULLA-SOFT , THE REAL VIRTUAL

    In the case of straight movement for BRT buses,

    a centre lane BRT model still allows two more free left movements

    Straight movement of buses

    FMV Movement

    Bus Movement

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    Central Lane BRTLeft Lane BRT

    BRT Left v/s Central lane

    Signal complexities

    MEDULLA-SOFT , THE REAL VIRTUAL

    Although intuitively it may appear that the left lane BRT model will be conducive to left turning, a centre

    lane BRT will offer the same freedom of movement to other traffic directions

    Left movement of buses

    FMV Movement

    Bus Movement

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    Friction with traffic at non-signalized intersections bus

    efficiency affected

    Cars have to jump two lanes to merge into main traffic

    Safety hazard as cars may not be alert for low frequency buses, whilewaiting for gap in FMV lane traffic movement

    High Queuing while waiting for weaving opportunities

    We examine a free left movement from a side road on to the

    BRT corridor for both models, as right turns will have to cross

    the entire carriageway in either case

    BRT Left v/s Central lane

    Merging complexities

    Central Lane BRT

    click here for video

    Left Lane BRT

    click here for video

    MEDULLA-SOFT , THE REAL VIRTUAL

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    Travel times in current scenario

    Misrod to Habibganj Naka 32 minutes 12 Bus stops

    Habibganj Naka to Board Office 9 minutes 2 bus stops

    Board Office to Apex Bank 16 mins 6 bus stops

    Apex Bank to VIP Junction 17 mins 6 bus stops

    VIP junction to Lalghati Square 16 mins 5 bus stops

    Lalghati to Bairagarh Station 12 mins 5 bus stops 104 minutes over 24 kms 13.8 km/h

    Network Performance

    Bus Travel Times

    MEDULLA-SOFT , THE REAL VIRTUAL

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    Movement of buses in segregated lane

    ensures efficient throughput

    No need to interact with other traffic or with non

    motorized traffic in the BRT lane

    Network Performance

    Bus Travel Times

    MEDULLA-SOFT , THE REAL VIRTUAL

    Click on

    image for

    magnified size

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    Buses Direction of movement

    Section Misrod to Bairagarh Bairagarh to Misrod

    Length of

    section (in Km)

    No of bus

    stops in

    section

    Average Time

    taken (in

    Seconds)

    Average

    speed (in

    Km/Hr)

    Average Time

    taken (in

    Seconds)

    Average

    speed (in

    Km/Hr)

    Misrod to Habibganj Naka (before proposed

    ROB) 6.7 26 1045 23 800 19Habibganj Naka to Mansarovar 1.8 4 270 24 300 23

    Mansarovar to Board Office Square 1 2 155 23 139 34

    Board Office to Shivaji Square 1.4 6 207 24 140 18

    Shivaji Square to Apex Bank 1.8 11 243 27 215 20

    Apex Bank to Roshanpura Square 0.5 2 124 14 152 24

    Roshanpura Square to Polytechnic

    Square 1 2 167 21 111 16

    Polytechnic Square to Curfew MataTemple 1.2 4 217 20 283 23

    Curfew Mata Temple to Imami Gate

    Junction 0.7 0 107 23 222 23

    Imami Gate to SBI Junction 1.3 0 125 37 210 17

    SBI Juction to Lal Ghati Square 1.9 10 363 19 212 30

    Lal Ghati Square to bairagarh 4.3 16 756 20 982 24

    Network Performance

    Bus Travel Times

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    Time over total stretch of 24 km ~1hr 3 mins Average bus speed 23 km/h

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    Buses and public transport needing frequent

    stops no longer interact with FMVs

    bottlenecks reduced

    NMVs, pedestrians also segregated

    Network Performance

    Car Travel Times

    MEDULLA-SOFT , THE REAL VIRTUAL

    Click on

    image for

    magnified size

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    CARS Direction of movement

    Section Misrod to Bairagarh Bairagarh to Misrod

    Length of

    section

    (in Km)

    Average

    Time taken

    (in Seconds)

    Average

    speed

    (in Km/Hr)

    Average time

    taken

    (in Seconds)

    Average

    speed

    (in Km/Hr)

    Misrod to Habibganj Naka (beforeproposed ROB) 6.7 428 56 336 35

    Habibganj Naka to Mansarovar 1.8 120 54 116 45

    Mansarovar to Board Office Square 1 142 25 96 35

    Board Office to Shivaji Square 1.4 90 47 95 26

    Shivaji Square to Apex Bank 1.8 121 43 68 50

    Apex Bank to Roshanpura Square 0.5 88 20 106 34

    Roshanpura Square to Polytechnic

    Square 1 80 45 64 28

    Polytechnic Square to Curfew MataTemple 1.2 67 64 136 48

    Curfew Mata Temple to Imami Gate

    Junction 0.7 62 41 136 37

    Imami Gate to SBI Junction 1.3 75 42 110 33

    SBI Juction to Lal Ghati Square 1.9 140 49 155 42

    Lal Ghati Square to bairagarh 4.3 315 49 424 43

    Network Performance

    Car Travel Times

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    Network PerformanceSpace Time Chart-Misrod to Bairagarh

    0

    5

    10

    15

    20

    25

    0 900 1800 2700 3600 4500 5400 6300 7200 8100 9000 9900 10800 11700 12600 13500

    Bairagarh 23.6 KM

    Lal Ghati 19.3 KM

    SBI Flyover 17.4 KM

    Curfew Mata Temple 16.1

    KM

    VIP Junction 15.4 KM

    Polytechnic Square 14.2 KM

    Roshan Pura Square 13.2 KM

    Apex Bank 12.7 KM

    Shivaji Square 10.9 KM

    Board Office Square 9.5 KM

    Mansarovar Complex 8.5

    KM

    Habibganj Naka 6.7 km

    MEDULLA-SOFT , THE REAL VIRTUAL

    Slanted lines trace the path of individual buses, Horizontal lines indicate various locations on the route

    Horizontal axis Time (sec): Time 900 represents 9:00 am (start simulations), 11700 represents 12 noon (end simulations)

    Vertical axis Distance (km): Distance 0 represents start of corridor, 24 km represents end of corridor

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    0

    5

    10

    15

    20

    25

    0 900 1800 2700 3600 4500 5400 6300 7200 8100 9000 9900 10800 11700 12600 13500

    Bairagarh 23.6 KM

    Lal Ghati 19.3 KM

    SBI Flyover 17.4 KM

    Curfew Mata Temple 16.1

    KM

    VIP Junction 15.4 KM

    Polytechnic Square 14.2 KM

    RoshanPura Square 13.2

    KM

    Apex Bank 12.7 KM

    Shivaji Square 10.9 KM

    Board Office Square 9.5 KM

    Mansarovar Complex 8.5

    KM

    Habibganj Naka 6.7 km

    Network PerformanceSpace Time Chart-Bairagarh to Misrod

    MEDULLA-SOFT , THE REAL VIRTUAL

    Slanted lines trace the path of individual buses, Horizontal lines indicate various locations on the route

    Horizontal axis Time (sec): Time 900 represents 9:00 am (start simulations), 11700 represents 12 noon (end simulations)

    Vertical axis Distance (km): Distance 0 represents start of corridor, 24 km represents end of corridor

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    Network PerformanceQueue lengths at major intersections

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    Board

    Office

    Queue length measurements done for FMV lanes

    Maximum queue length is the range of maximum queue lengths

    over half hour periods from 9:00 am to 12 noon

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    Network PerformanceQueue lengths at major intersections

    MEDULLA-SOFT , THE REAL VIRTUAL

    Roshan

    Pura

    Queue length measurements done for FMV lanes

    Maximum queue length is the range of maximum queue lengths

    over half hour periods from 9:00 am to 12 noon

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    Network PerformanceQueue lengths at major intersections

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    VIP

    junction

    Queue length measurements done for FMV lanes

    Maximum queue length is the range of maximum queue lengths

    over half hour periods from 9:00 am to 12 noon

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    Network PerformanceQueue lengths at major intersections

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    Lalghati

    Queue length measurements done for FMV lanes

    Maximum queue length is the range of maximum queue lengths

    over half hour periods from 9:00 am to 12 noon

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    Network Optimization

    Vehicle actuated signals and Transit priority

    can improve travel times and queuing

    scenarios for buses as well as FMVs

    A scenario was simulated at the Board Office

    Square and the impact was analyzed

    Vehicle Actuated

    Signal with Transit

    Priority click here for

    video

    Normal signal click

    here for video

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    Network OptimizationQueue lengths Comparison with system of vehicle

    actuated signals and Transit Priority (TRP)

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    Normal BRT

    BRT with Vehicle

    Actuated Signals

    and Transit Priority

    Queue length measurements for FMV lanes

    Maximum queue length is the range of

    maximum queue lengths over half hour

    periods from 9:00 am to 12 noon

    Upto 70% reduction in

    average queue lengths

    Upto 50% reduction in

    maximum queue lengths

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    Network OptimizationBus Travel times Comparison with TRP

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    40% improvement in

    speed over the stretch

    Shivaji Square Board Office

    Square

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    Network OptimizationCar Travel Times Comparison with TRP

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    50% improvement in travel

    timeover the stretch

    Shivaji Square Board Office

    Square

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    Other issues

    Transitions between mixed traffic and dedicated corridors

    where buses have to move from left lane to centre lane or

    vice versa need to be planned to ensure safe weaving and

    merging

    Transitions over short distance may result in bottlenecks and

    potentially safety issues

    Training, proper signage and markings can encourage smooth

    and safetransition of buses

    Small Transition

    Click here for video

    Large Transition

    Click here for video

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    Summary

    Average time taken by buses to go from Misrod to Bairagarh atpresent is 1 hr 40 mins

    Average time taken after BRT creation will be roughly 1 hr 3mins

    Average speed of buses will go from 14.5 km/hr to 22.9 km/h

    Internationally 20 25 km/h is considered threshold speed for asuccessful BRT corridor

    There can be further improvements through Signal optimizationsand vehicle actuated signals having transit priority

    Segregation of different speed vehicles will add to the safety forslow moving vehicles and pedestrians while improving efficiency for

    FMVs Cars are expected to be able cover the stretch from Misrod to

    Bairagarh with an average speed of 45 km/h once the BRT corridoris set up

    MEDULLA-SOFT , THE REAL VIRTUAL

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    Thank You

    MEDULLA-SOFT , THE REAL VIRTUAL

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