Topic: Speed limits on ramps?

[ktm525]

I take the recommend speed and triple it  if I have a good line of sight and all is clear.

I do roughly the same thing. I can double to suggestions typically in our minivan without any stress. When I had my WRX there was a particular 401 off ramp with a substantially decreasing radius corner (seems like it must have been done on purpose) that was always a riot to come through at Mach3 with my hair on fire.

I thought a decreasing radius turn was a civil engineering no no.  Even us dumb miners don’t lay-out such nonsense in underground ramps.

Calgary's got a couple of nasty decreasing radius curves. Curb is all black so it catches a lot of drivers unaware. It must have been designed by a drop-out. As for rec. speeds I take it double in the truck and triple in the car.

[tpl]

I take the recommend speed and triple it  if I have a good line of sight and all is clear.

I do roughly the same thing. I can double to suggestions typically in our minivan without any stress. When I had my WRX there was a particular 401 off ramp with a substantially decreasing radius corner (seems like it must have been done on purpose) that was always a riot to come through at Mach3 with my hair on fire.

I thought a decreasing radius turn was a civil engineering no no.  Even us dumb miners don’t lay-out such nonsense in underground ramps.

Well there are obviously some over educated highway engineers around here then 'cos there are a fair few bad ramps onto the 401 and especially the 407.

[DockMan]

Well there are obviously some over educated highway engineers around here then 'cos there are a fair few bad ramps onto the 401 and especially the 407.

"Bad" is all in what car your in and your frame of mind at the time.

@Snowy - I looks like it is a property thing at this specific one. Not enough land to do it properly.

[Snowman]

Well there are obviously some over educated highway engineers around here then 'cos there are a fair few bad ramps onto the 401 and especially the 407.

"Bad" is all in what car your in and your frame of mind at the time.

@Snowy - I looks like it is a property thing at this specific one. Not enough land to do it properly.

So why not have one radius?

[DockMan]

So why not have one radius?

Dunno. Some kind of lead in requirement that didn't leave enough room to continue a consistent rad? Who knows.

[tenpenny]

There is a lead in tangent and an exit tangent, but the decision about whether to keep the radius constant has to do with available space and also dependent on what sort of roads are involved.

I vaguely remember reading somewhere that ramps with decreasing radii are discouraged these days.

[weebl]

I've always believed that yellow/orange speed signs were advisory and a suggested speed, and that any speed stated on a white sign was the law.

So a yellow ramp sign should be no different.  There are some white ramp signs in the Edmonton area (most are, some newer ones are yellow).

But there's an interesting question that I've always wondered about that's tied to the whole yellow sign on a ramp thing:  Let's say the freeway's speed limit is 100, the road you are exiting onto has a limit of 50.  The ramp sign suggests 70 (because it's in yellow), but technically, it is not a speed limit.  Does that mean the ramp's legal speed limit is 100?  It can't be 50, since that's lower than the 70 suggested?  Or is it "sky's the limit" since there is no limit on the ramp? 

[ktm525]

I've always believed that yellow/orange speed signs were advisory and a suggested speed, and that any speed stated on a white sign was the law.

So a yellow ramp sign should be no different.  There are some white ramp signs in the Edmonton area (most are, some newer ones are yellow).

But there's an interesting question that I've always wondered about that's tied to the whole yellow sign on a ramp thing:  Let's say the freeway's speed limit is 100, the road you are exiting onto has a limit of 50.  The ramp sign suggests 70 (because it's in yellow), but technically, it is not a speed limit.  Does that mean the ramp's legal speed limit is 100?  It can't be 50, since that's lower than the 70 suggested?  Or is it "sky's the limit" since there is no limit on the ramp? 

The skys the limit till you tag the curb. 

[tpl]

I've always believed that yellow/orange speed signs were advisory and a suggested speed, and that any speed stated on a white sign was the law.

So a yellow ramp sign should be no different.  There are some white ramp signs in the Edmonton area (most are, some newer ones are yellow).

But there's an interesting question that I've always wondered about that's tied to the whole yellow sign on a ramp thing:  Let's say the freeway's speed limit is 100, the road you are exiting onto has a limit of 50.  The ramp sign suggests 70 (because it's in yellow), but technically, it is not a speed limit.  Does that mean the ramp's legal speed limit is 100?  It can't be 50, since that's lower than the 70 suggested?  Or is it "sky's the limit" since there is no limit on the ramp? 

The ramp limit will be the same as the expressway limit and when you hit the 50 sign at the end of the ramp then you must be doing 50 or under.

[tpl]

There is a lead in tangent and an exit tangent, but the decision about whether to keep the radius constant has to do with available space and also dependent on what sort of roads are involved.

I vaguely remember reading somewhere that ramps with decreasing radii are discouraged these days.

The RIGHT way would be to put in a correct single radius ramp, with appropriately long lead in and lead out and knock down as many buildings as required.  And by the way don't forget to put in banking that starts by matching the expressway speed and ends up matching the road one is to exit to.

[dr_spock]

I had some guy in front of me looking like he was losing it going fast on the ramp today.  He steered into the gravel on the inner curve.  Would that be understeer?   I quickly eased off my throttle to see what he was going to do next.  Any way, he managed to correct himself. 

According to the driver's handbook, the yellow speed limit sign shows maximum speed on ramp.  I've seen people pulled over on the ramp.  Not sure what for. 

[RunsinLight]

According to the drivers handbook online "Posted under a curve warning, this sign shows the maximum safe speed for the curve."
Does this mean they could charge you with carless driving or something like that?

[dr_spock]

Maybe failure to obey a sign.   That's probably easier to convict than careless.

[Ex-airbalancer]

On the 401, in construction zones, the signs are orange, with 89 max,
Would these signs be legal limited?

[tenpenny]

 In NB, in construction zones, the fines for speeding (above the reduced limit) are double what they would normally be.

[Triple Bob]

Posted limit, I quadruple it and -10 !

 

He steered into the gravel on the inner curve.  Would that be understeer?

How long have you been posting on this forum, and you don't even know what understeer is?!? I despair...

 

[Bubba]

Does this mean they could charge you with carless driving or something like that?

Only if you're riding a pony.    

[Wolfe]

He steered into the gravel on the inner curve.  Would that be understeer?

How long have you been posting on this forum, and you don't even know what understeer is?!? I despair...

 

Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car.

Oversteer is when the passengers are scared, Understeer is when the driver is scared.

 

[wing]

That second part sums it up pretty good actually!

[Rupert]

The motorcyclist who was caught speeding at 250km/hr or whatever was being darned careful not to fall off. I can't believe this thread...is speed so essential that it has to be debated around the few yards (no appologies) of a feed on/off ramp. There are a few ramps where you have to keep your revs up in the bend, to reach highway speed in an ordinary 'non sporting' car; Belevile/401 comes to mind...a very short feed on taper. The vast majority of ramps have plenty of straight to attain highway speed.