Traffic Control Device Demonstration – June 15, 2005 Summary Report Traffic Control Device Demonstration June 15, 2005

Traffic Control Device Demonstration – June 15, 2005 Summary Report Conducted at the 3M Transportation Safety Center in Cottage Grove, Minnesota Sponsored by Mn/DOT and Northland ATSSA

Traffic Control Device Demonstration – June 15, 2005 Summary Report

Autoflagger not part of the survey

Traffic Control Device Demonstration – June 15, 2005 Summary Report Daytime top half –Brightness 98% –Legibility 93% Nighttime top half –Brightness 94% –Legibility 90% No Passing Sign

Traffic Control Device Demonstration – June 15, 2005 Summary Report Font –Top is easiest to read –Bottom is easiest to read Sheeting –Right side is brighter –Right side is clearer Glyph Trail Sign

Traffic Control Device Demonstration – June 15, 2005 Summary Report Typical Comments –Looks uniform across – NO Difference –Different shades of green? –Left side is brighter? –Center is brighter? –Didnt look like the sign was level OXOXOX Sign

Traffic Control Device Demonstration – June 15, 2005 Summary Report Daytime –Left 64% –Middle 36% Daytime –Middle 38% –Right 62% Fidgety Sign

Traffic Control Device Demonstration – June 15, 2005 Summary Report Nighttime –Left 15% –Middle 85% Nighttime –Middle 20% –Right 80% Fidgety Sign

Traffic Control Device Demonstration – June 15, 2005 Summary Report Daytime –Left 66% –Middle 4% –Right 30% Conspicuity Signs

Traffic Control Device Demonstration – June 15, 2005 Summary Report Nighttime –Left 86% –Middle 5% –Right 9% Conspicuity Signs

Traffic Control Device Demonstration – June 15, 2005 Summary Report Daytime –Left 92% –Middle 5% –Right 3% Legibility Signs

Traffic Control Device Demonstration – June 15, 2005 Summary Report Nighttime –Left 59% –Middle 5% –Right 36% Legibility Signs

Traffic Control Device Demonstration – June 15, 2005 Summary Report STOP Signs Daytime –Brightness Left 61% Right 39% –Legibility Left 63% Right 37%

Traffic Control Device Demonstration – June 15, 2005 Summary Report STOP Signs Nighttime –Brightness Left 96% Right 4% –Legibility Left 86% Right 14%

Traffic Control Device Demonstration – June 15, 2005 Summary Report Wet Reflective Pavement Markings Typical Nighttime Comments –Awesome –Non-wet tape looks black –Obviously superior –Both white and yellow

Traffic Control Device Demonstration – June 15, 2005 Summary Report Typical Lane Closure Typical Comments –Drums demand respect –Looks like a solid wall –Hard to tell lanes are merging at barrels –Visible / Clean - not confusing –Very visible, good alignment –Type III with arrow was critical for direction

Traffic Control Device Demonstration – June 15, 2005 Summary Report Night Maint. Lane Closure Typical Comments –2 arrow boards command respect –Cones look like a gap in the closure –Looks cluttered –Direction barricades easier to follow than barrels –Much better at night than during the day

Traffic Control Device Demonstration – June 15, 2005 Summary Report Various Displays

Traffic Control Device Demonstration – June 15, 2005 Summary Report Conclusions – Actions Taken DG 3 Tech Memo For permanent and temporary WZ signs Clearview Fonts Concluded to stay with current fonts Nighttime Maintenance Lane Closure Tapers MN MUTCD is being reviewed to allow the practice

Traffic Control Device Demonstration – June 15, 2005 Summary Report Questions?