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Due to rapid increase in number of vehicles, especially private vehicles and degrading nature of public transportation, congestion is almost unavoidable. This presentation deals with cause, effect and solution of congestion along with what should be the traffic management schemes to deal with this sort of problem in long term.
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Congestion and Traffic Management
Traffic and Transportation Engineer
Congestion in Kathmandu Valley:
Traffic Congestion
Congestion in Bangkok, Thailand
Major Contributor of Congestion:
Effects of Congestion
Reduction in Speed & DelayObstruction to Emergency
vehicles
Effects of Congestion(2)
Environmental pollution: Other effects:
Economic Impact of Congestion
•Traffic Congestion cost of US cities rangesbetween USD 35 billion to USD 48 billion.
•Traffic jams cost Moscow USD 1.3 billion a year.
•Traffic congestion costs the South Africanbusiness USD 18 billion a year.
•Traffic congestion in Dhaka eats up USD 3billion a year.
Economic Impact of Congestion(2):
Time loss due to congestion
More than 1000 million passengers
travel by road every day, worldwide.
If a passenger lose 1 minute
everyday , in traffic congestion,
total annual time loss is
700,000 YEARS !!!(Source: Er. C.J. Johnson MIE)
Thus Investment to reduce
traffic congestion is
INEVITABLE and
JUSTIFIABLE
Framework for Congestion Reduction:
Land use
Awareness
Pricing
Management
Infrastructure
Information
The range of policy options(www.konsult.leeds.ac.uk)
What is Traffic Management?
Engineering, Enforcement andEducational
Why Traffic Management
•Not enough roads
•Cannot keep constructing new roads
Objectives:
Traffic Management Process
Identify traffic
problems
Collect data
Analyze data &
formulate solution
Estimate cost of
improvements
Implement
measures
Monitor & fine-tune or
adjust measures
Consult
stakeholders
Secure efficient and
safe flow of people
and goods through
the road network
Conduct
information drive
Secure fund
Traffic Engineering Measures
Traffic Engineering Measures
Advanced signal control
Signal timing review
Traffic sign / road marking
Road section
Intersection Geometry improvement
Turn restriction
Reversible lane
Traffic information system
Wide area Area traffic control system
Truck ban
One-way
Traffic sign / road marking
Traffic Signals and their Coordination
Coordinated signals to maximize throughput and minimize delay
Distance
Tim
e
Shorter Travel Time
Tim
e
Uncoordinated Signals Coordinated Signals
Distance
Sig
nal
Traffic Signal –Control Mode
Signal
Clock Vehicle Detector
Connection
Fixed Time Time-of-day (TOD) Actuation
Coordinated Area Traffic Control
Traffic responsive/adaptive
Traffic Control Center
Traffic Demand Management
Traffic Demand
Management
Demand
suppressionRoad pricing
Restriction by plate number
Tele-working
Parking control/parking fee
Modal shift Use of public transport
Park & ride
Demand
dispersalTraffic information system
Staggered office / school hour
Flex time
Efficient use of
carHOV lane
Car sharing
Efficient cargo distribution
Our present strategy - Dog chasing its
own tail
Road space will never catch up with
vehicle population.
The solution
Replace private transport with public
transport.
This is the only solution that will work in the long
term.
Comparison:
Why Public Transportation???
What Public Transport can do:
Before After
June 1, 2014 Hemant Tiwari 23
Public Transportation Should:
•Be Safe, Fast, Systematic and reliable
•Have good comfort and security level.
•Fixed Operating characteristics (Definite stop and stop duration, fixed time table)
•High accessibility
• Economical as well as environmental friendly
BRT, famous latest form of Public Transportation
June 1, 2014 Hemant Tiwari 26
Exclusive lane for BRT
Improved bus system : Rs. 3000 Cr.
Time required : 1 year.
Road widening for planned 400 km. : Rs. 4000 Cr.
Total Destruction of city
33Km Metro carrying 5 % of total population
: Rs. 9000 Cr.
Metro 350 km. for whole of Bangalore
: Rs. 100,000 Cr.
The economics
Which one is better???
BRT IN KATHMANDU RING ROAD( A CASE STUDY)
Status Quo Analysis
Passenger patronage:
4240 & 2996
Service frequency
Direction Time Service Interval (min)
Clockwise Peak 2
Clockwise Off Peak 2.86
Anti Clockwise Peak 2.31
Anti Clockwise Off Peak 3
Promote Public Transportation
Which lifestyle do we want?
Private transport has given us this
1
Public transportation along with NMT and
walking
2
DECISION RESTS ON YOU!!!
THINK!!! THINK!!!
THANKYOU!!!
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