Fastest/slowest freeways

[golden eagle]

I-285 speeds are about 80-85 mph (mostly better) outside of rush hour.

And I-85 through Gwinnett. I guess everyone takes advantage of the low traffic and pretend that they're NASCAR drivers.

[jeffandnicole]

I-95 in Delaware moves very quick, especially in the 5 lane portion.  The big downside to this is that the interchange with DE 1 can frequently congest, especially in the exit-only right lane.  There are a lot of accidents from vehicles unable to slow down in time, and lots of skidmarks in that right lane, evidence of the drivers that were caught off-guard at the congested traffic.

[tradephoric]

Forbes.com recently did an article titled "America's 5 Fastest Roads".  This is how they determined the list...

"To determine America's fastest roads, INRIX first looked for stretches of roadway where motorists routinely floor it, then it found the speed range at which each roadway's fastest 5% of drivers travel. INRIX multiplied that figure by the length of each road to decide the final ranking. The result is a list of roads where drivers put the pedal to the metal over fairly long distances. Inrix counts the same road separately in different travel directions."

Here's the top 5 fastest roads they came up with:

5. Arizona State Route 77
Heading North out of Tucson up to the AZ-76/Redington Road interchange near San Manuel Airport
Average speed of fastest 5%: 81 mph
Top speed clocked by INRIX: 81 mph
Length of corridor: 4.8 miles

4. Eastbound MI-5 Michigan Highway
Heading into Detroit from the I-275/I-96 interchange to Telegraph Road
Average speed of fastest 5%: 81 mph
Top speed clocked by INRIX: 83 mph
Length of corridor: 4.9 miles

3. California State Route 73
In both directions between Moulton Parkway and Bear Street
Average speed of fastest 5%: 81 mph
Top speed clocked by INRIX: 85 mph
Length of corridor: 14.8 miles

2. Oklahoma State Highway 33
In both directions just Northwest of Oklahoma City
Average speed of fastest 5%: 83 mph
Top speed clocked by INRIX: 87 mph
Length of corridor: 24

1. Northbound Arizona State Route 79
Between Saguaro National Park and Phoenix
Average speed of fastest 5%: 88 mph
Top speed clocked by INRIX: 94 mph
Length of corridor: 17.6 miles

I can attest that M-5 is Detroit's version of the Autobahn.