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The I-99 Corridor faces significant challenges including freeway congestion, increasing levels of service (LOS) at key interchanges, and a high incidence of crashes. To address these issues, the Louisiana Department of Transportation (LDOT) collaborates with traffic management experts from various states to improve mobility and safety. Recommended strategies include freeway service patrols, dynamic message signs, signal timing improvements, and demand management initiatives such as carpooling and telecommuting. The aim is to enhance system operations within the allocated budget of $5 million.
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I-99 Corridor LDOTCurrent Situation • Freeway congestion – LOS PM Peak • LOS increases NB at 3 major interchange • Crashes – Highest within ½ mile of interchange • Arterial street congestion • Demand exceeds capacity at 3 major intersections • Signal Control <Session Title>
I-99 Corridor LDOTApproach • Experts on traffic management, traveler information and incident management from Maryland, North Carolina, New York City, Arizona and Massachusetts hired to work with LDOT and interagency Corridor Congestion Task Force. • Vision – improve mobility and safety on the corridor • Goal – utilize the provided budget to enhance the system operation on the corridor <Session Title>
I-99 Corridor LDOTFreeway Strategies Considered • Freeway Service Patrol • Traffic Operations Center • Inter-Agency Cooperation • CCTV • Toll Roads • Highway Advisory Radio • Dynamic Message Signs • Sensors • 800 MHz Radio System • Corridor Management Team • HOV Lanes • Public Information and Media Outreach <Session Title>
I-99 Corridor LDOTArterial Strategies • 800 MHz Radio system • Arterial Dynamic Message Signs • Traffic Signal Timing • Integrating Signal Systems <Session Title>
I-99 Corridor LDOTDemand Strategies • Increased traveler information • Telecommuting • Flex-time • Carpooling • Park and Ride • Public information and outreach <Session Title>
Recommendations • Ramp Metering – 3 major interchanges NB • Freeway Management Cameras- detection, verification, congestion HAR Sensors- detection and travel time Dynamic message signs • Incident Management Freeway service patrol 800 MGz radio – interagency Traffic Operations Center Text Messaging System for interagency coordination • Corridor Traffic Management Team - interagency <Session Title>
Recommendations (cont) • Arterial Management Arterial DMS Signal retiming Integrated signal system • Demand Management Plan Public outreach campaign – Hire Agency Traveler Information Telecommuting Flex-time Carpooling Park and ride • TOC – Add work station and contracted staff 16 hours M-F <Session Title>
Cost Initial Cost • Freeway - $3M • Arterial - $1M • Demand Management - $500k • Design and Contingency - $500k Operating Cost • Annual increase - $1M <Session Title>
Concept of Operations • System operation at LDOT TOC Contractor 16 hrs M-F and LDOT staff off hours Signal control, DMS activation, traveler information, incident management coordination • Ramp metering- 3 major NB interchange • Traffic signal timing improvements and integration • Incident Management Task Force – Interagency coordination coordination, MOU’s. <Session Title>
