1. DYNAMIC LANE MERGING FOR SHORT TERM WORK ZONES By Rami C. Harb PhD PE PTOE Essam Radwan PhD PE

2. Simplified Dynamic Lane Merging MOT plan used in FL is the Motorist Awareness System (MAS) Add dynamic lane merging schemes to the regular MAS 2 forms of dynamic lane merging: 1-Dynamic Early merge 2-Dynamic Late merge Compare Safety and Operations

3. Simplified Dynamic Lane Merging CONVENTIONAL FL MOT

4. Simplified Dynamic Lane Merging MODIFIED CONVENTIONAL FL MOT

5. DLM System Design DLM Components 1.RTMS : Remote Traffic Microwave Sensors 2.On-board processor 3.UHF communication modem 4.Central communications system 5.PCMS: Portable Changeable Message Sign RTMS Unit

6. DLM System Design DLM Components

7. DLM System Design DLM SETUP

8. Results Modified MOT Plan Replication in VISSIM

9. Calibration

10. MOEs Speed Variance Deceleration rates Coefficient of variance Control Variables MOT type Demand Volumes Vehicle Classification Compliance rate MOT Types: MAS VSL Early DLM Late DLM EDLM+VSL LDLM+VSL

12. Results Early and late SDLMS performed better in both open and closed lane than all other MOT types for low and medium volume levels (V0500, V1000 and V1500). V2000 and V2500, VSL was significantly better than SDLMS combinations, respectively.