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Detailed analysis of traffic control devices tested at the 3M Transportation Safety Center. Includes legibility, brightness, and orientation assessments. Insights on various signage and lane closure setups.
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Traffic Control DeviceDemonstrationJune 15, 2005 Summary Report Traffic Control Device Demonstration – June 15, 2005Summary Report
Conducted at the 3M Transportation Safety Center in Cottage Grove, MinnesotaSponsored by Mn/DOT and Northland ATSSA Traffic Control Device Demonstration – June 15, 2005Summary Report
Traffic Control Device Demonstration – June 15, 2005Summary Report
Autoflaggernot part of the survey Traffic Control Device Demonstration – June 15, 2005Summary Report
Daytime top half Brightness 98% Legibility 93% Nighttime top half Brightness 94% Legibility 90% No PassingSign DG3 VIP Traffic Control Device Demonstration – June 15, 2005Summary Report
Font Top is easiest to read Bottom is easiest to read Sheeting Right side is brighter Right side is clearer Glyph TrailSign VIP DG3 CLEARVIEW on Bottom Traffic Control Device Demonstration – June 15, 2005Summary Report
Typical Comments Looks uniform across – NO Difference Different shades of green? Left side is brighter? Center is brighter? Didn’t look like the sign was level OXOXOXSign Orientation Traffic Control Device Demonstration – June 15, 2005Summary Report
Daytime Left 64% Middle 36% Daytime Middle 38% Right62% FidgetySign VIP DG3 DG3 CLEARVIEW Traffic Control Device Demonstration – June 15, 2005Summary Report
Nighttime Left 15% Middle 85% Nighttime Middle 20% Right80% FidgetySign VIP DG3 DG3 CLEARVIEW Traffic Control Device Demonstration – June 15, 2005Summary Report
Daytime Left 66% Middle 4% Right 30% ConspicuitySigns LEDs Border Traffic Control Device Demonstration – June 15, 2005Summary Report
Nighttime Left 86% Middle 5% Right9% ConspicuitySigns LEDs Border Traffic Control Device Demonstration – June 15, 2005Summary Report
Daytime Left 92% Middle 5% Right 3% LegibilitySigns CLEARVIEW CLEARVIEW Traffic Control Device Demonstration – June 15, 2005Summary Report
Nighttime Left 59% Middle 5% Right 36% LegibilitySigns CLEARVIEW CLEARVIEW Traffic Control Device Demonstration – June 15, 2005Summary Report
Daytime Brightness Left 61% Right 39% Legibility Left 63% Right 37% STOPSigns DG3 VIP Traffic Control Device Demonstration – June 15, 2005Summary Report
Nighttime Brightness Left 96% Right 4% Legibility Left 86% Right 14% STOPSigns DG3 VIP Traffic Control Device Demonstration – June 15, 2005Summary Report
Typical Nighttime Comments Awesome Non-wet tape looks black Obviously superior Both white and yellow Wet ReflectivePavement Markings Traffic Control Device Demonstration – June 15, 2005Summary Report
Typical Comments Drums demand respect Looks like a solid wall Hard to tell lanes are mergingat barrels Visible / Clean - not confusing Very visible, good alignment Type III with arrow was critical for direction TypicalLane Closure Traffic Control Device Demonstration – June 15, 2005Summary Report
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 Night Maint.Lane Closure Traffic Control Device Demonstration – June 15, 2005Summary Report
VariousDisplays Traffic Control Device Demonstration – June 15, 2005Summary Report
DG3 Tech Memo For permanent and temporary WZ signs Clearview Fonts Concluded to stay with current fonts Nighttime Maintenance LaneClosure TapersMN MUTCD is being reviewed to allow the practice Conclusions – Actions Taken Traffic Control Device Demonstration – June 15, 2005Summary Report
Questions? Traffic Control Device Demonstration – June 15, 2005Summary Report