Evaluating Alternative Operations Strategies to Improve Travel Time ...

SHRP 2 L11: Final Report
Table 6.6 Key Infrastructure Improvements and Demand Optimization Strategies (Continued)
Strategy
Treatments
SWOT Technology Status
Strengths Weaknesses Opportunities Threats
Low,
Medium,
High
Current,
Emerging,
New
Application
to Sources of
Congestion
Traffic Adaptive
Signal Control/
Advanced Signal
Systems
Improve
mobility
Cost
Possible connection with low
cost technologies instead of
using loop detectors
Medium
Emerging
Traffic Control
Devices
5.3.Signal
Timing/ ITS
Advanced
Transportation
Automation
Systems, Signal
Priority and AVL
(Transit, CVO and
Truck)
Improve
Transit,
Freight,
CVO
Mobility
Cost
Application to multimodal
corridors and will help
reduce auto utilization with
reliable transit services,
Improvement to freight
operations may reduce cost
of fuel consumption and gas
emissions.
Lack of
support and
funding
High
Emerging
Traffic Control
Devices
5.4.Traffic
Demand
Metering
Ramp Metering,
Ramp Closure
Improve
mobility and
safety
Impact on
arterials (relocate
congestion)
Application on freeways that
have reached their
saturation point.
Public
acceptance
Medium
Emerging
All but
Weather &
Work Zones
5.5.Variable
Speed Limits
(VSL)
Variable Speed
Limits
Improve
mobility and
traffic flow
It is a new
concept to drivers
in U.S. It needs
research and
advertising
Low cost application.
Integration with other ITS
technologies
Public
acceptance
Low
Emerging
Physical
Bottlenecks
OPERATIONS STRATEGIES AND TREATMENTS TO IMPROVE TRAVEL-TIME RELIABILITY Page 76