south jordan oval-about
DESCRIPTION
South Jordan Oval-About. Trevor Briggs, David Clark, Daniel Miller, Jeff Sadler. Problem. A unique traffic feature near a busy commercial center in South Jordan is experiencing congestion. . S. Problem. Current Performance Problems. Objectives. Assess current level of service - PowerPoint PPT PresentationTRANSCRIPT
Trevor Briggs, David Clark, Daniel Miller, Jeff Sadler
South Jordan Oval-About
BCMSENGINEERING
Problem
• A unique traffic feature near a busy commercial center in South Jordan is experiencing congestion.
S
Problem
Current Performance Problems Objectives• Assess current level of
service• Estimate time until failure• Present mitigation
alternatives • Costs-benefit analysis
Level of Service A-B C D E-F
S
Analysis
Traffic Counts Data Processing
M
Analysis
Synchro Modeling and Analysis
• Large delays on north and southbound approaches• Insufficient gap lengths on 11400 South
B
Mitigations
• Speed Bumps
• Turning-lane Addition
• Traffic Metering
BC
Cost-Benefit Analysis
MitigationAlternative
Approximate Cost
Benefit
Queue Delay Delay/Vehicle Fuel Reduction
Speed Bump $6000 9% 4% 16% 2%Turn Lane $105,035 17% 22% 62% 9%Metering $338,180 20% 32% 74% 7%
Costs are based on present value.Benefits are measured as improvement compared to the “do nothing” alternative based on 2040 traffic volumes.
C
Recommendations
• Short-term: turning-lane addition• Long-term: traffic signals
M