Jump to content

Exit ramp speed question???


BmannZR2

Recommended Posts

Posted

Not sure what Texas says about it, but this is directly from the State of FL code. Just like what has been mentioned..

 

 

16. Advisory speed signs are warning signs and display recommended maximum

 

 

 

comfortable and safe speed rather than the maximum legal speed as displayed on

 

 

 

regulatory signs used for speed zoning. Hence, their color is yellow and black

 

 

 

(orange and black for work site application) rather than white and black.

 

 

 

 

The

 

 

 

MUTCD illustrates two types of these signs in Section 2C-35 and 2C-36.

 

 

 

a. The ADVISORY SPEED (W13-1) plate is a supplemental square sign which

 

 

 

“…shall not be used in conjunction with any sign other than a warning sign,

 

 

 

nor shall it be used alone” (Old edition of the MUTCD). The MUTCD further

 

 

 

states “Except in emergencies, or at construction or maintenance sites,

 

 

 

where the situation calling for an advisory speed is temporary, an Advisory

 

 

 

Speed plate shall not be erected until the recommended speed has been

 

 

 

determined by accepted traffic engineering procedure.” Concerning

 

 

 

temporary speed signs the MUTCD also states: Warning signs with

 

 

 

advisory speed limits should be posted at those locations where the safe

 

 

 

speed is lower than the normal legal limit. At selected locations, reduced

 

 

 

legal maximum limits may be established as provided by statute and

 

 

 

posted accordingly.” (Old edition)

 

 

 

b. The ADVISORY EXIT SPEED (W13-2 and W13-3) signs are rectangular

 

 

 

signs which are used alone prior to and/or on expressway and freeway

 

 

 

ramps, and like the ADVISORY SPEED (W13-1) plate, are intended for use

 

 

 

where engineering investigations show the need of advising drivers of the

 

 

 

recommended maximum comfortable and safe speed.

 

 

 

ADVISORY SPEED signs are not meant to show a speed beyond which a

 

 

 

vehicle will spin out (if on a horizontal curve) or bottom out (if used for a dip or

 

 

 

hump in the roadway). Rather, they allow for a comfortable margin of safety

 

 

because of variations in vehicle and pavement characteristics.

 

Now, as mentioned above, the "legal" speed limit is in ideal conditions. I have written tickets in the past during rain storms where an individual is traveling the posted speed limit, however because of the roadway being flooded or the rain being so sever that visibilty is limited, it was unsafe. We run into it more in the fog here than anything, Same with a motor vehicle accident and the person says that they were doing the speed limit, but visibility was severly reduced, they are cited.

 

why not give the guy a warning. I know i slow down according to road conditions but some people just dont have a personal safety sense and need to be told if its raining heavy please slow down to X amount . ive slowed down to 30km before on a icy highway was pure ice . some warm winds came in and melted the snow and then froze over the high way at night . and i was white knuckling it the whole 3 hour drive feeling like i was barerly in control . and then once inawhile i would see a guy go zooming past and then see him in the ditch with about 3 feet of snow around him stuck lol . I believe max speed sights should have under them if wheather permits . then you could nail him with a fine if you want but since there is no warning about that . anyways girl is saying i should go to bed have to go even tho i am not done what i want to say lol .

Posted

I tried to pass a state trooper in bad weather once when I had the Subaru (AWD+snow tires=winter monster) and he flashed his blues at me, so I decided I'd have to wait behind him like everyone else. :lol:

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts
  • Member Statistics

    342,863
    Total Members
    8,960
    Most Online
    Bulldogger
    Newest Member
    Bulldogger
    Joined
  • Who's Online   5 Members, 1 Anonymous, 841 Guests (See full list)

  • Latest Articles

  • Posts

    • It added a cost layer to an already limited production supply. True that. 
    • Swap costs and supply/demand balance. When a barrel comes out of the ground the entire range of products are present but not all at the same percentage.    Breakdown of Refined Products The following table summarizes the approximate output from a standard 42-gallon barrel of crude oil: Product Type Gallons per Barrel Percentage of Total Gasoline 20 gallons 45% Diesel Fuel 9 gallons 21% Other Products 13 gallons 31%   Most of that diesel figure is 'straight run' or cut from the barrel. Gasoline 'cut from the barrel runs 0 to 20% at the crude. So in the crude unit there is more diesel the gasoline, usually.  The full refining experience however gives the tabled values. Ego there is half the diesel than gasoline after the 'first crack' That could be an FCC unit, or Isomax or....   Those units take heavy products and break the big ones into little ones. Those numbers are harder to get hold of but directionally it ends up the same.    Really light products are very profitable. Ethylene and Propylene to name two. Those are cracked from slightly heavier feeds like NG and Propane and Ethane. The cracker harshness determines the feed for distillation. Those feeds come from less profitable products like diesel and gasoline.    So...there is a swap cost. How much market is there TODAY and what crude am I running TODAY..... what is my process capable of always.    There is this as well. The USA uses allot more gasoline than it does diesel so in the cracker the process is tilted to gasoline production which....limits supply of diesel. OTR uses the most and it has different requirements than automotive and agricultural.  Limiting auto products.    You are correct however. It is less refined, just less of it. Allot less. 
    • Most thermostatically controlled ATF systems use a 'wax' pill just like the one in your water thermostat. They work on the expansion volume of the wax and the pill is constructed in such a way as to limit the travel to remain within that range. This means it has an opening temperature often called the 'cracking temperature' and a fully open temperature. For whatever reason oil is designated by it's fully open temperature and water by it's cracking temperature.    Between the two it the "Regulating Temperature" The entire range is about 20 F from closed to open. In your example the lower limit, opening point of 145 F then has a fully open temp of 165 F and a throttling temperature of 155 F.    Thing is, the throttling temperature needs two things to work properly. Enough system load high enough to reach the minimum and a heat sink (cooler/exchanger) large enough to prevent any load applied from exceeding the fully open temperature.    If your system exceeds the fully open temperature it is screaming MORE COOLER.    Here is the silly part of the whole thermostat system where the oil is cooled/heated by the radiator. Nothing is flowing to that system until the oil temperature reaches the cracking temperature unless it is equipped with a minimum flow bypass orifice or a bypass built into the seating surface of the plunger. That system meant to get it up to temp quicker isn't doing a thing until WORK drives if from ambient to cracking temp. One a cold winter day, like zero F, it may never get hotter than about 110 F. Sometimes not even that.    People forget or are young enough to not know that until this millennia transmissions were cooled by the radiator cold tank alone and without a thermostat at all.  In the 50's they weren't even cooled. OEMs learn everything the hard way.    When an OEM tells you the trans "Works best" between 175 F and 220 F it means works best for THEM. The transmission thermostat is fuel play. If you watch you trans temps like I do you will learn that it may take a hundred miles if you are not towing and not driving more than say 55-60 mph on a zero F day to even reach 120 F and it might sit there all day if it's colder. Yet if functions perfectly over about 100 F. It may need to get a bit warmer for the fuel and spark maps to go without an multiplier.    Worry more about too hot. Use a cooler large enough to put that thermostat in range.         
    • Around 2008 if memory serves they took sulfur out. That was when diesel went up. 
    • Question for you Grumpy, why is diesel so much more than gasoline? Seems to me that it may be slightly a little less refined than gas and it doesn't have 10% alcohol which presumably lowers the price of gas
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...