bhopal brt
TRANSCRIPT
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Bhopal BRTMicro Simulation Analysis
and 3D VR Simulation
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Thank You
MEDULLA-SOFT , THE REAL VIRTUAL