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[PAHighways]

Motorists stuck on the Schuylkill will be able to find out travel times beginning September 30. Thirteen dynamic message signs in Philadelphia and
Montgomery County on I-76, I-476, and US 1 will display times between major interchanges.

Highway Message Signs to Display Time, Distance on I-76 in Philadelphia and Montgomery County

[mightyace]

It's about time Philly joins the 21st century. 

[rickmastfan67]

We need some of those here in Pittsburgh.

[Chris]

I always wonder how accurate those travel times are. Traffic congestion is not static, and changes while you're driving. Especially with full gridlocks, travel times I see in the Netherlands are highly inaccurate, often underrated. The delay displayed is "32 minutes", while people are 1.5 hours late for work.

[Truvelo]

The signs over here never give times lower than what can be obtained by driving at the speed limit. They usually show something like 70 MILES 65 MINUTES so when I do 90mph at night I can always knock about 20 minutes off that time

[mightyace]

The signs over here never give times lower than what can be obtained by driving at the speed limit. They usually show something like 70 MILES 65 MINUTES so when I do 90mph at night I can always knock about 20 minutes off that time

When I was in Atlanta, I noticed that some of the travel times listed on the signs would require travel faster than the posted speed limit.  (Though not by much.)  This was definitely a surprise to me.

[Chris]

^^ Probably based on actual traffic speed. If they monitor traffic by license plates, or local speeds, the travel times can be higher than the posted limit.

[WISFreeways]

Just double-decker it with express lanes and transfer lanes every 2 miles. Who cares about the money? That highway is chronically congested and really needs a rebuild