Wrong Way MFFY! 3382John, They are referring to MUTCD, Manual on Uniform Traffic Control Devices. You can read it here. Specifically, they are talking about their Holy Grail, setting speed limits to the...
Brent P
Wrong Way MFFY! 3381The 85th percentile speed is where collision involvement is minimal. It comes directly from analysis of data. Since it made sense that the safest...
Didja ever ask yourself, "How do they get away with that"?
Where's your evidence speed limit criteria is pulled out of someone's butt? Where's your *data* of what the 85th percentile speed actually *is*?
Where in the f*** is your *data* supporting your argument? Here's some of mine and it doesn't seem as if it was pulled from someone's butt. Montana is about as liberal as it can be regarding speed limits having actually abolished the highway limits back in the '90's.
- Design Speed for Montana Highways -
Design speed is "the maximum safe speed that can be maintained over a specified section of highway when conditions are so favorable that the design features of the highway govern." A design speed is selected for each highway project and according to MDT's road design manual it relates to the driver's comfort and not the speed at which a vehicle will lose control. Design speed is based on several road National Highway System (interstate and principal arterials)
Terrain Type - Design Speed Level - 110 Km-h (70 mph) Rolling - 100 Km-h (62 mph) Mountainous - 80 Km-h (50 mph)
Surface Transportation Program (remainder of primary, secondary, urban and state highways)
Terrain Type - Design Speed Level - 100 Km-h (62 mph) Rolling - 90 Km-h (56 mph) Mountainous - 70 Km-h (43 mph) -----
- gpsman
