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Author Topic: Route numbers that could be speed limits  (Read 7702 times)

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Route numbers that could be speed limits
« on: January 28, 2015, 03:17:50 PM »

Blue routes are the ones that work.

Use your own state!

Multiples of 5 only, please. Nothing above 100 in the U.S. unless there is a "no speed limit" type road, and nothing below 20 without a good reason.

Here are route numbers 20 through 95 in Massachusetts, and whether it would work as a speed limit or not:

20: Too slow outside of Boston. And inside of Boston, traffic lights will be what slows you down.
25: Way too slow for a freeway.
30: Reasonable. Maybe a bit slow outside of MA 128.
35: Reasonable.
40: Reasonable, although a bit slow outside of Chelmsford.

45: Does not exist.
50: Does not exist.
55: Does not exist.

60: Way too fast, especially in an urban area.
65: Does not exist.
70: Too fast, even between 2 and 117.
75: Does not exist.
80: Way too fast for a non-freeway.
85: Way too fast for a non-freeway.
90: The Mass Pike is a bit too mountainous to be going 90.
95: 85+ is only for straight rural sections, which I-95 is not.

Now for New Hampshire, 25 to 95 (20 does not exist):
25: Too slow for a route that does not have urban areas.
30: Does not exist.
35: Does not exist.
40: Does not exist.

45: Reasonable, although a bit slow, considering that the route is mostly empty.
50: Does not exist.
55: Does not exist.
60: Does not exist.
65: Does not exist.
70: Does not exist.

75: Even though it's mostly rural, it's still too fast.
80: Does not exist.
85: Way too fast for a non-freeway through Exeter.
90: Does not exist.
95: 85+ is only for straight rural sections, which I-95 is not.
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Zeffy

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Re: Route numbers that could be speed limits
« Reply #1 on: January 28, 2015, 03:30:15 PM »

New Jersey:

NJ 20 - Even if it's in residential Paterson, it's too slow for a divided highway and too slow for an arterial anyway.
US 30 - Nope
NJ 35 - Hell no, too long and not enough residential areas
US 40 - It would be kinda slow in some areas... but it could work
NJ 45 - Between Mantua and Mullica Hill, as well as up until Woodstown, and finally all the way until you reach Salem, yes, but in those areas 45 is a bit too iffy
NJ 50 - Maybe. It passes through rural areas of Atlantic County, but it may be too fast for the residential areas that it does pass by
NJ 55 - Definitely. It's a freeway anyway.
NJ 70 - Besides the fact the highest speed limit in Jersey is 65, this is too much of an arterial to have a 70 MPH speed limit
I-80 - It'd be nice, considering it's an Interstate, but there's no way it would happen
NJ 90 - It's the Betsy Ross Bridge. There's nothing else to say.
I-95 - That's a bit extreme.
« Last Edit: January 28, 2015, 03:37:51 PM by Zeffy »
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Re: Route numbers that could be speed limits
« Reply #2 on: January 28, 2015, 03:33:41 PM »

Kentucky tends to use x5 speed limits, so I'll stick to those.

US 25 -- yep, through the downtowns of most cities
KY 35 -- I think it has this speed limit in Sparta and in Warsaw.
US 45 -- yep, several places.
KY 55 -- for most of it.
I-65 -- yep.
I-75 -- should be, but our speed limit maximum is 70.
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Re: Route numbers that could be speed limits
« Reply #3 on: January 28, 2015, 03:44:44 PM »

Colorado:

I-70 - Easily
CO 60 - mostly rural, so plausible
CO 55 - very plausible
US 50 - plausible somewhere
CO 45 - in Pueblo, maybe somewhere
US 40 - On Colfax Ave for sure
CO 35 - Entirely in Denver (Quebec St), so plausible
CO 30 - Entirely in Denver (Hampden Ave), so plausible
I-25 - A stretch, but you could argue this is the de facto speed limit between Colorado Blvd. and Sante Fe Dr. on most afternoons  :-P

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Re: Route numbers that could be speed limits
« Reply #4 on: January 28, 2015, 03:51:10 PM »

US 10, MN 15, MN 20 - Too slow.

MN 25 - Has a lot of sharp turns in the route, so at times this is reasonable.

MN 30, I-35 - Too slow.

MN 40 - Probably has some in-town segments.

MN 45 - Reasonable. This route is only two miles long anyway.  :biggrin:

MN 50 - Reasonable.

MN 55 - Perfect.

MN 60 - Probably perfect as well - does have some flat, rural segments and quite a bit of expressway upgrading these days.

MN 65 - Posted 65 north of the Twin Cities to Cambridge as 4-lane expressway.

MN 70, US 75, MN 80, I-90, MN 95 - Too fast.
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Re: Route numbers that could be speed limits
« Reply #5 on: January 28, 2015, 03:52:24 PM »

Virginia:
VA 20: maybe in one of the small towns it goes through
VA 25: doesn't exist
VA 30: in West Point, maybe
VA 35: too rural for the most part, but maybe in Courtland
VA 40: on the outskirts of some of the towns, but mostly no
VA 45: the segment in Goochland County actually is 45, but south of Cartersville is deservedly 55. Actually could be posted higher if not for state law
US 50: wouldn't surprise me if it is 50 somewhere, but don't know of anywhere for sure
VA 55: probably is in several places
US 60: I think there are a few places in the empty space between Powhatan and Amherst that are posted 60. If not, they could easily be, as could sections between I-295 and VA 30
VA 65/70/75/80: no, terrain issues
I-85: could be, but state laws and potholes say otherwise
VA 90: no
I-95: would be OK in a couple rural areas, but like I-85 state laws would dictate otherwise
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Re: Route numbers that could be speed limits
« Reply #6 on: January 28, 2015, 04:01:11 PM »

Virginia:
....
US 50: wouldn't surprise me if it is 50 somewhere, but don't know of anywhere for sure
VA 55: probably is in several places
....

Correct on both of those. Route 50 is posted at 50 mph for most of the segment between Paris and Gilbert's Corner, except of course for the segments passing through Upperville, Middleburg, and Aldie where it drops to 25 mph (and they mean it!). I even obey the 50-mph speed limit on that road. There may be other 50-mph segments on Route 50, but that's the one I can readily think of. West of Paris it's posted at 55; east of the roundabouts near Gilbert's Corner I'm not sure, and the widening project in eastern Loudoun County surely affects things too.

Lots of portions of Route 55 are posted at 55 mph. It also has a 70-mph segment (short concurrency with I-66 near Marshall and Delaplane where you pass Barrel Oak Winery).
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Re: Route numbers that could be speed limits
« Reply #7 on: January 28, 2015, 04:01:58 PM »

Unfortunately, California’s major north-south artery (I-5) would be one of the most excruciating drives on earth. It’s miserable enough at 70. (Although at times in LA, 5 m.p.h. would be an improvement.)

CA 35 (Skyline Boulevard) would be rather slow but close to reasonable.
I-40 - way too slow
CA 45 - also slow, but closer to tolerable
US 50 - a bit slow for the freeway in Sacramento, a bit fast for some of the mountainous stretches in El Dorado County.
CA 55 (Costa Mesa Freeway) - close to normal
CA 60 (Pomona Freeway) - close to normal
CA 65 - close to normal
CA 70 - too fast for much of this route
CA 75 - pushing it
I-80 - close to actual speeds during low-traffic periods; too fast for Donner pass
CA 85 - pushing it
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Re: Route numbers that could be speed limits
« Reply #8 on: January 28, 2015, 04:22:32 PM »

Texas list, 30 to 75

30 - none found (except I-30 frontage roads, which I don't think should count)
SH 35
BI 40-D
BI 45-J (these BIs were my last resorts)
FM 50
SH 55
FM 60
SH 65 (most of it)
US 70
US 75
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Re: Route numbers that could be speed limits
« Reply #9 on: January 28, 2015, 04:54:02 PM »

Oregon:

US 30/OR 35 - this is pretty reasonable for the Historic Columbia River Highway section (1 roadway, 2 different route numbers)
OR 70 - 2 lane rural highway in the middle of farming country, I bet most people drive 70 mph on it


But no luck on the few interstates we have, all weird numbers.
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Re: Route numbers that could be speed limits
« Reply #10 on: January 28, 2015, 05:03:03 PM »

Oregon:
I-5 - Only for trucks coming down the Syskiyous.
OR 10 - Maybe during rush hour in Beaverton.
No 15
US 20 - Too slow
No 25
US 30 - Seems reasonable for the Mosier Curves, and decent for rush hour in Portland. Too slow otherwise.
OR 35 - Too slow
No 40-65
OR 70 - Would work
No 75-95
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Re: Route numbers that could be speed limits
« Reply #11 on: January 28, 2015, 05:13:06 PM »

Louisiana:

20 - Definitely not I-20, on LA 20 maybe at the funky northbound transition at LA 24, or maybe downtown Thibodaux, but not as a whole
25 - LA 25 in Franklinton, but not the rest of the highway
30 - LA 30 - still too slow for the whole road, but the northern end at LSU and downtown Baton Rouge
35 - LA 35:maybe in parts of Church Point and Rayne
40 - not great as a whole for LA 40
45 - have not traveled LA 45, but this could work throughout. Bigger highway in New Orleans suburbs and a good speed limit south of the Intracoastal bridge
50 - I'm not sure you could get to 50 mph on this small stretch of hwy. Lot of things close to the shoulders of this 2 laner.
55 - definitely could work on LA 55. Far enough away from the city life in Houma and it is a connector to gulf coast communities
60 - may be a little too curvy on LA 60, but possible
65 - US 65 is mostly rural outside of Lake Providence and Tallulah, so for 90% of this hwy, yes
70 - not a good choice on LA 70 in the curvy swamp sections
75 - LA 75 is also a river road on the MS River banks, so 75 is a no go there
80 - no. US 80 goes through way too many medium sized towns and downtowns of large cities.
85 - you might be able to get to 85 mph on a straight stretch of LA 85, but not likely
90 - US 90's freeway portions, but that's about it
95 - no chance on LA 95. zigzaggy road and many turns
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Re: Route numbers that could be speed limits
« Reply #12 on: January 28, 2015, 06:03:18 PM »

Here are route numbers 20 through 95 in Massachusetts, and whether it would work as a speed limit or not:
95: 85+ is only for straight rural sections, which I-95 is not.
Along the 8-lane stretch of I-95 between Exits 50 (US 1) and 57 (MA 113); one could easily set the cruise at 85+ without any real issues, smokey's notwithstanding.
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Re: Route numbers that could be speed limits
« Reply #13 on: January 28, 2015, 07:47:29 PM »

Iowa:

US-20 - not a chance.
IA-25 - doesn't look like it hits any city centers directly, so probably not.
US-30 - maybe once or twice in a western town that it hasn't bypassed yet.
I-35 - hell no.
IA-40 - doesn't exist
IA-45 - doesn't exist
IA-50 - doesn't exist
IA-55 - doesn't exist (man, they're pretty inconsistent with route numbers)
IA-60 - Reasonable. AFAIK, it's an expressway with speed limit 65 for its entire length. Even if it's not, it's very reasonable to do 60 on any given Iowa* 2-lane road.
US-65 - I'm pretty sure 65 is its speed limit between Des Moines and the IA-330 split. Other than that, it's still pretty reasonable.
IA-70 - if you feel ballsy. It's relatively straight, but there might be a few hills here and there and it's only two lanes.
US-75 - again, if you feel ballsy. You could probably get away with it on the freeway/expressway segment.
I-80 - "80 on 80" is a thing.
IA-85 - that part of the state is a bit too hilly to be doing 85 on a country road.


Anything above that is pretty unreasonable in general, and IA-90 and IA-95 don't exist.
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Re: Route numbers that could be speed limits
« Reply #14 on: January 28, 2015, 08:03:06 PM »

Michigan:

M-20 - not the speed limit, but there's probably some sections that can only go that fast
M-25 - maybe in Bay City, or somewhere in a small-town speed-trap
M-30 - likely in some small sections
M-35, M-40, M-45 - very probably
M-50 - maybe
M-55 - most of it
M-60, M-65, M-70 - no way - although M-65 was, back before Nixon's 55
I-75 - I wish
M-80, M-85, M-90, M-95 - again, no way
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Re: Route numbers that could be speed limits
« Reply #15 on: January 28, 2015, 08:10:46 PM »

Idaho-

SH-5- ...no
I-15- ...no
US 20- ....no
SH-25- ...no
US 30- ....no
SH-40- ...I'd be annoyed, but it'd be doable
SH-45- maybe the average speed limit over the entire road
SH-50- ...that would be annoying
SH-55- ! most of SH-55 is 55 mph
SH-60- ! Idaho 60 has a 55 MPH speed limit, but it really could be 65.
SH-75- eh...for parts of it, but no.

Montana
MT-5- ...no
I-15- ...no
US 20- ...no
MT-25- ...no
MT-35- ...no
MT-55- Sure, but it's 70.
MT-65- Hahaha not even possible
MT-80- yes! and it will be if SB 228 passes (unlikely, unfortunately, as there are more modest speed limit increase bills floating).

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Re: Route numbers that could be speed limits
« Reply #16 on: January 28, 2015, 08:14:21 PM »

Indiana

US 40 - In most towns it passes through this is the speed limit.
I-70 - The speed limit is 70 already.
I-80 - could probably handle these speeds.
I-90 - 90 is considered reckless driving in IN.
US 50- 50 would be a bit slow. Most of it is 55 mph.
US 30- Way too slow.
I-65- The speed limit for trucks.
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Re: Route numbers that could be speed limits
« Reply #17 on: January 28, 2015, 08:23:02 PM »

Virginia:
VA 20: maybe in one of the small towns it goes through
VA 25: doesn't exist
VA 30: in West Point, maybe
VA 35: too rural for the most part, but maybe in Courtland
VA 40: on the outskirts of some of the towns, but mostly no
VA 45: the segment in Goochland County actually is 45, but south of Cartersville is deservedly 55. Actually could be posted higher if not for state law
US 50: wouldn't surprise me if it is 50 somewhere, but don't know of anywhere for sure
VA 55: probably is in several places
US 60: I think there are a few places in the empty space between Powhatan and Amherst that are posted 60. If not, they could easily be, as could sections between I-295 and VA 30
VA 65/70/75/80: no, terrain issues
I-85: could be, but state laws and potholes say otherwise
VA 90: no
I-95: would be OK in a couple rural areas, but like I-85 state laws would dictate otherwise

VA 20 has a 25 mph posting in Orange.  There are few non-school 20 mph speed zones in Virginia, unlike North Carolina which has many.
VA 35 has 35 mph zones through Courtland and on the outskirts areas of Boykins (25 mph in central Boykins)
VA 40 has a 40 mph zone in Ferrum and likely in other locations given its length
There are no 60 mph zones on US 60 although between Providence Forge and Anderson's Corner would be a reasonable candidate.  While Powhatan to Amherst is quite empty, there are only 2 miles of 4-laning on this stretch and there are no 60 mph 2-lane roads in Virginia.

Mapmikey
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Re: Route numbers that could be speed limits
« Reply #18 on: January 28, 2015, 08:36:19 PM »

To touch on some of New Jersey's roads where the route number/speed limit is interchangeable...

US 30 - Nope
Yep: It's signed for 30 mph in several towns that US 30 goes thru in Camden County where it's 2 lanes wide, including Collingswood, Haddon Twp and Audubon.

Quote
NJ 35 - Hell no, too long and not enough residential areas.
There's several shore towns where portions of 35 are signed for 35, such as Neptune & Toms River.

Quote
US 40 - It would be kinda slow in some areas... but it could work
Elmer and Franklin are two.

Quote
NJ 45 - Between Mantua and Mullica Hill, as well as up until Woodstown, and finally all the way until you reach Salem, yes, but in those areas 45 is a bit too iffy
From Mantua to Mullica Hill, it's signed as 50.  But in Mantua itself, along with Woodbury Heights, West Deptford & Westville, portions are signed for 45 mph.  And that's just the stretches I travel nearly every day.

Quote
NJ 50 - Maybe. It passes throuh rural areas of Atlantic County, but it may be too fast for the residential areas that it does pass by
The majority of Rt. 50 is signed for 50 mph

Quote
NJ 55 - Definitely. It's a freeway anyway.
It used to be Rt. 55 was signed 55 mph the entire way (ok, except for that mile of 2 lane highway at the southern end).  Before the highway opened in Deptford, someone spray painted "Stay Alive, Drive 55" graffiti on the corner of a bridge overpass, which remained there for many years.  No idea if they meant the speed limit or the highway.  Today, 55 limits only exist for about 1/2 mile in both directions at the southern end, and for about 2 miles on Rt. 55 North as you approach Rt. 42.
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Re: Route numbers that could be speed limits
« Reply #19 on: January 28, 2015, 08:44:55 PM »

Indiana

US 40 - In most towns it passes through this is the speed limit.
I-70 - The speed limit is 70 already.
I-80 - could probably handle these speeds.
I-90 - 90 is considered reckless driving in IN.
US 50- 50 would be a bit slow. Most of it is 55 mph.
US 30- Way too slow.
I-65- The speed limit for trucks.

In addition:
SR 25- Maybe, not sure though how slow it gets in Warsaw or Rochester, but back when it traveled straight through Lafayette perhaps
US 35- Probably, especially through LaPorte, Knox and Winamac
SR 45- Yes, I've seen the signs myself SW of Bloomington
SR 55- Yes, perhaps nearly the entire highway, being a rural two-lane highway
SR 65- I'd imagine not, though one could probably go that speed
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Re: Route numbers that could be speed limits
« Reply #20 on: January 28, 2015, 09:18:22 PM »


20: CT 20 is a partial freeway so I would say no. Although, it's a more rural road past Bradley, 20 MPH is too slow.
25: CT 25 is also a partial freeway. 25 MPH may be acceptable for the rural towns it passes through, but definitely not the whole route.
30: It's a mostly rural and residential road. I guess you could say 30 MPH might be allowed at some small intersections/villages, but not the whole route.
35: CT 35 is mostly residential, so I would say yes.
40: CT 40 is a freeway and 40 is too slow.
45: CT 45 is a rural road, 45 seems about right.
55: CT 55 is also a rural road, but 55 MPH is too fast. CT 55 is mostly a winding road.
70: 70 MPH is way too fast for a residential road.
75: CT 75 is mostly rural/residential.
80: CT 80 is a major E-W arterial in South Central CT, but 80 MPH is too fast since it's mostly residential.
85: CT 85 is a rural road.
95: Besides Bridgeport and New Haven (eventually), I-95 is mostly unchanged since it was originally built. It's mostly all 55-65 MPH.
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Re: Route numbers that could be speed limits
« Reply #21 on: January 28, 2015, 09:32:33 PM »

Texas list, 30 to 75

30 - none found (except I-30 frontage roads, which I don't think should count)
SH 35
BI 40-D
BI 45-J (these BIs were my last resorts)
FM 50
SH 55
FM 60
SH 65 (most of it)
US 70
US 75
Bonus: SH 130 is posted at 80mph for most of its length, which would be 130km/h if we used metric.
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Re: Route numbers that could be speed limits
« Reply #22 on: January 28, 2015, 10:26:57 PM »

Utah

US 40 – this is the speed limit (in places)
US 50 – plausible, but posted at 65, except in towns
I 70 – this is the speed limit (in places)
I 80 – this is the speed limit (in places)
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Re: Route numbers that could be speed limits
« Reply #23 on: January 28, 2015, 11:02:44 PM »

Because I live in Canada, I'll use km/h limits:

PR 100 south of Winnipeg has a limit of 100 km/h: http://goo.gl/maps/pae2x
PR 50 has a limit of 50 in towns along its route: http://goo.gl/maps/EA1Fk

Not really a hwy but Winnipeg city route (seriously) 80 has a limit of 80 during most of its length: http://goo.gl/maps/fd0De
City route 90 has a limit of 90: http://goo.gl/maps/G8wQj

I'm sure there are more out there.

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Re: Route numbers that could be speed limits
« Reply #24 on: January 29, 2015, 02:28:03 AM »

I-80 - … too fast for Donner pass

Not really.  I've seen cars pushing 80 on I-80 over the Sierra Nevadas.

CA 85 - pushing it

Speeding was so rampant when the new section of CA-85 opened in 1994, that the joke was drivers thought the route number was also the speed limit.  The CHP now does routine enforcement on 85 to try to keep speeds down.
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Quote from: golden eagle
If I owned a dam and decided to donate it to charity, would I be giving a dam? I'm sure that might be a first because no one really gives a dam.

 


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