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Chapter 6: Traffic Management & Traffic Control Traffic Management…
Chapter 6: Traffic Management & Traffic Control
Traffic Management & Control
What is Traffic Management?
Definition: Process of adjusting road systems to improve traffic without major construction.
Objectives:
Ease traffic congestion
Enhance road safety
Improve traffic flow
Improve transportation of people and goods
Reduce impacts on the environment
Create a balanced modal split
Why Manage Traffic?
Traffic congestion problems in cities
Public transport affected by jams
Criticisms on new road constructions
Negative impact on the environment and health
Mobility, accessibility, and safety problems for non-motorized road users
Increased travel cost
Problems if Traffic is Not Well Managed:
Traffic congestion
Road accidents
Disruption of public transportation
Adverse effects on the environment
Safety risk for pedestrians and cyclists
Increased travel cost
Using up of funds and land
Traffic Management Techniques Categories:
a.
Improve Capacity
Link & junctions improvement
On-street parking & trading restrictions
Traffic signals improvement
One-way & tidal flow movements
Road markings and signing improvements
b.
Allocate Priorities
Pedestrian areas
Cycle lanes
Bus & HOV lanes
Selective detection at signals
Exemption from other regulations
c.
Restraint
Traffic calming
Parking controls
Physical restraints
Area licensing
Road pricing
Improve Capacity Techniques:
Link & Junctions Improvement
On-Street Parking & Trading Restrictions
One-Way Street
Turning & Entry Restrictions
Contra Flow (Tidal Flow/Reverse Flow)
Allocate Priorities Techniques:
Pedestrian Segregation
Cyclist Segregation
Bus Lanes
High Occupancy Vehicle (HOV) Lanes
Traffic Restraint Techniques:
Traffic Calming
Control Over Accesses and Development
Enforce Traffic Laws
Speed Limits and Speed Zones
Managing Heavy Goods Vehicles (HGV)
Providing for Public Transport
Parking (to provide or to restrict)
Network Traffic Management (ATM & ITIS)
Network Traffic Management Techniques:*
ATM (Active Traffic Management)
Speed harmonization
Queue warning
Ramp metering
Dynamic message sign
Temporary shoulder use
Automated speed enforcement
Dynamic rerouting & traveler information
Dynamic lane marking
Travel time sign
ITIS (Intelligent Traffic Management System)
Traffic management center (TMC)
Monitoring via CCTV, AIDS, AVLS
Data gathering and processing
Information dissemination via VMS, call center, internet
Benefits of ITIS
• Allows road user and commuters to choice modes and schedule
• Enable real time capture of traffic info for incident management and long term planning
• Alleviate traffic congestion
•Reduce accident
• Improve emergency assistants for motorist and commuters
•Reduce travel times
•Reduce pollution
• Provide comfort, safety and security
• Improves utilization of availability road capacity
•Improve quality of life
NUR ZULAIKHA AIRA BINTI MUNTAZ AHMAD (CN210143)