Regional Boards > Northeast
PA Turnpike News
VTGoose:
--- Quote from: MultiMillionMiler on December 03, 2022, 04:08:33 PM ---Not because of the traffic, but because of how dangerously curvy it is west of Exit 201. Drivers need more room to navigate those sharp turns through the terrain without flipping their cars over.
--- End quote ---
Or people could just actually drive for the conditions and not have to worry about "flipping their cars over." If someone is that reckless then perhaps they shouldn't be on the road.
jeffandnicole:
--- Quote from: MultiMillionMiler on December 05, 2022, 12:36:58 PM ---
--- Quote from: VTGoose on December 05, 2022, 10:52:59 AM ---
--- Quote from: MultiMillionMiler on December 03, 2022, 04:08:33 PM ---Not because of the traffic, but because of how dangerously curvy it is west of Exit 201. Drivers need more room to navigate those sharp turns through the terrain without flipping their cars over.
--- End quote ---
Or people could just actually drive for the conditions and not have to worry about "flipping their cars over." If someone is that reckless then perhaps they shouldn't be on the road.
--- End quote ---
But most of those curves can't even handle the speed limit.
--- End quote ---
That's not unusual. That's why God invented advisory speeds.
kphoger:
--- Quote from: MultiMillionMiler on December 03, 2022, 01:46:52 PM ---The Pennsylvania Turnpike should be 3 lanes in each direction the entire length, especially west of Exit 201 and east of Exit 226. It's way too windy and weavy to be any narrower. It needs widening to be a safe road.
--- End quote ---
Who let this troll in the thread?
--- Quote from: famartin on December 03, 2022, 04:39:01 PM ---
--- Quote from: MultiMillionMiler on December 03, 2022, 04:08:33 PM ---Not because of the traffic, but because of how dangerously curvy it is west of Exit 201. Drivers need more room to navigate those sharp turns through the terrain without flipping their cars over.
--- End quote ---
Curves are solved by straightening, banking, or by lowering the speed limit. Widening doesn't help all that much and is considerably more costly compared to the better solutions.
--- End quote ---
This. All another lane would add is a paved place for the flipped car to land.
J N Winkler:
--- Quote from: jeffandnicole on December 04, 2022, 09:12:30 PM ---Gotta justify the need for a widening for more than a handful of days a year. Nearly every road needs a widening based on that criteria.
If it was congested multiple times each weekend all summer long, then it's worth looking into a widening.
--- End quote ---
This is why the starting point for a decision as to how much capacity to add is the number of lanes required to accommodate the design hour volume at a target LOS that is often specified as LOS B for rural freeways and LOS D for urban freeways. (The justification for using an inferior LOS in urban areas is that congestion is more tolerable in small doses.) DHV is traditionally defined as the 30th highest hour in the design year, but in special circumstances (e.g., very high cost to widen and extreme seasonality of traffic) can be something like the 100th highest hour.
On this forum, we tend to discuss whether widenings are justified or not in terms of very crude present-day AADT warrants (e.g., 10,000 VPD in flat country for widening from two-lane to four-lane divided, or 30,000 VPD for freeway widening from four to six lanes) because that is the only form of traffic data that is conveniently available from most state DOTs. The traffic modeling on which most actual widening decisions are based tends to be more closely held.
MultiMillionMiler:
--- Quote from: jeffandnicole on December 05, 2022, 12:50:51 PM ---
--- Quote from: MultiMillionMiler on December 05, 2022, 12:36:58 PM ---
--- Quote from: VTGoose on December 05, 2022, 10:52:59 AM ---
--- Quote from: MultiMillionMiler on December 03, 2022, 04:08:33 PM ---Not because of the traffic, but because of how dangerously curvy it is west of Exit 201. Drivers need more room to navigate those sharp turns through the terrain without flipping their cars over.
--- End quote ---
Or people could just actually drive for the conditions and not have to worry about "flipping their cars over." If someone is that reckless then perhaps they shouldn't be on the road.
--- End quote ---
But most of those curves can't even handle the speed limit.
--- End quote ---
That's not unusual. That's why God invented advisory speeds.
--- End quote ---
Well given the speed limit already drops to 50 or 55 around those curves, the advisory speed is likely 40-45 mph.
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