ramp metering pilot project may 11th, 2010 e. jason sims, p.e. kansas city scout tmc manager
TRANSCRIPT
Ramp MeteringPilot Project
May 11th, 2010
E. Jason Sims, P.E.Kansas City Scout TMC Manager
“TOC” vs “TMC”
Project History And
Traffic Analysis
Kansas City Scout Ramp Metering History
• National experiences and issues• Why the I-435 corridor?
– Close interchange spacings– Unique interchange configurations
Project Map
Project Map
Ramp Meter Location
Ro
e A
ve
Sta
te L
ine
Rd
Ho
lmes
Rd
104th
St
Traffic Analysis
• Existing traffic volumes and speeds
• Levels of service
• Before crash patterns
• Future traffic volumes
• Microsimulation of before and after
Look and Feel of Kansas City Ramp Meters
Ramp Meters Across the U.S.
Ramp Meters Across the U.S.
One-Lane Ramp, One Vehicle Per Green
• Advance Warning– ‘Be Prepared to
Stop’ sign– Flashing yellow
indication– Located on both
sides of ramp– Clear Messages– Flashing beacons
dark when not in operation
• Loop Detection– Demand loops– Passage loop– Advance queue
detection loop– AQ loop impacts
meter rate– No backups onto
arterial street
• Ramp Meter Control– ‘One Vehicle Per
Green’ sign
– Two red/green indications
– ‘Stop Here on Red’ sign
– ‘One Vehicle Per Green’ sticker on bottom indication
– All located on left side of ramp
Real World Look…
Real World Look…
Dual-Lane Ramp Meter, alternating One Vehicle per green light per lane. Westbound State Line Road is a potential location.
How It Works
• Some locations will allow two vehicles per green light. Signs will indicate the number of cars permitted per green.
Single-Lane, Two Vehicles per Green
Dual-Lane, Two Vehicles per Green
Customer Satisfaction
• Operational Observations
• Focus On Safety
• 1 Year Pre-Planned Public Relations Campaign
Public Relations
Reach Targeted Audiences
Audience Thematic Outreach Materials
Technical staff and local officials
Technical content with emphasis on facts, benefits, and experiences of other communities
Local public officialsLess technical content with accent on ramp metering benefits and safety
Law enforcement (highway patrol)
Focuses on ramp metering operation and enforcement
General publicHighly graphic, non-technical, and focuses on the need for ramp metering
After Study
• One year study
• Scout will release a six month update
• Rush hour accident reductions are the primary goal
• Improved mobility (reductions in travel time) are secondary
Summary and Conclusion
• Why do KDOT and MoDOT want to implement ramp metering?
• City concerns and government education
• Law enforcement• Customer inquiries
