Managed Lane Operations-Adjusted Time of Day Pricing vs. Near Real Time Dynamic Pricing
Contracting Agency: Florida Department of Transportation Principal Investigator: Yafeng Yin, Ph.D. Co-Principle Investigator: Lily Elefteriadou, Ph.D. Co-Principle Investigator: Scott Washburn, Ph.D.
has been advocated as an efficient way to reduce congestion for over
eighty years. However, it has been adopted only recently in part due to
the advent of electronic tolling and the pressing need for alternative
funding sources to finance transportation projects. In the U.S., a more
prevalent form of congestion pricing is high-occupancy/toll (HOT) or
express lanes. These are high-occupancy vehicle (HOV) facilities that
allow vehicles not meeting the occupancy or other requirements to gain
access by paying tolls. Since the first HOT lane was implemented in 1995
on State Route 91 in Orange County, California, the concept has gained
traction throughout the U.S., with at least seven HOT lane projects
operational. At least three of these projects currently use variable
pricing: California Department of Transportation on Interstate 15,
Florida Department of Transportation (FDOT) (on Interstate 95), and
Minnesota Department of Transportation on Interstate 394.
plans to deploy a series of connected express lanes on Interstates 95
and 595 in Miami and Fort Lauderdale. Phase 1A of the 95 Express project
consists of two northbound express lanes on Interstate 95 from SR
112/I-195 to the Golden Glades Interchange. Phase 1A is operational with
the express lanes open to traffic on July 11, 2008 and tolling
beginning on December 5, 2008.
is little research on the overall benefit of dynamic versus time-of-day
(TOD) control in these types of systems. Most, if not all, research to
date considers hypothetical and idealized situations in which analytical
solutions can be derived. This project will help ensure the operational
success of and protect the significant investment in these Managed
Lanes projects and answer questions such as: 1) does managed lane system
demand allocation exhibit hysteresis-like behavior? and 2) do the
statistics of urban freeway traffic support dynamic or quasi-dynamic
pricing for managed lanes?
research tasks include: 1) Analyze Managed Lanes Demand Behavior; 2)
Analyze TOD versus Dynamic Managed Lane Solutions; 3) Capacity Analysis
of 95 Express; 4) Improve Operations for Managed Lanes; 5) Coordination
between Pricing and Ramp Signaling and 6) Conduct and Evaluate the
Simulation. The project should closely coordinate with the on-going
NCHRP Project 03-96, Analysis of Managed Lanes on Freeway Facilities.
Duplication of effort will be avoided.
Transportation Research Center Lily Elefteriadou, Ph.D., TRC Director
University of Florida Civil & Coastal Engineering
512 Weil Hall | PO Box 116500 | Gainesville, FL 32611-6580
352.392.9537, Ext. 1409