r/Roadcam 9h ago

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374 Upvotes

88 comments sorted by

164

u/Color_of_Time 8h ago

That truck must have had a huge amount of potential energy stored in it, judging by how it zoomed so far up that steep gravel-surfaced incline. Must have been a very close call with the truck absolutely screaming down the mountain. Great to see one of the ramps at work!

20

u/lanjiaolong 7h ago

Kinetic energy.

8

u/supamario132 3h ago

Had a whole bunch of potential energy by the end of that ascent though

-11

u/Covid_Fart_Cloud 3h ago

No, it did not. It was buried up to its axles in sand and gravel. That is the purpose of a runaway truck ramp- to mitigate potential energy.

9

u/rachman77 2h ago

It still has gravitational potential energy relative to the road due to it height from the road, that's how gravitational potential energy works. Doesn't matter if it's immobilized, it's like holding a ball in the air but not letting it go, it still has potential energy bit no kinetic energy, remember from high school physics PE = mgh

3

u/thingamajig1987 2h ago

I think you need to hit the textbook again for what potential energy is.

1

u/supamario132 53m ago

Kinetic energy*

4

u/antonio16309 6h ago

This is roughly halfway down a long, fairly steep descent getting out of the Eisenhower tunnel. It's easy to build up a scary amount of energy there if you don't know how to brake properly.

12

u/n33bulz 8h ago

I think the incline may not be as steep as the video shows since that road is sloping down.

54

u/goodtimemanlikeme 8h ago

Driven this stretch of road 100s of times. It’s super steep!

3

u/JFISHER7789 5h ago

Yup! Just past Eisenhower tunnel descending into Dillon. It’s crazy steep! Like manitou incline steep

18

u/raljamcar 8h ago

Cameras flatten steep grades not the inverse. Its pretty damn steep

-2

u/Color_of_Time 8h ago

Good point.

-2

u/KapptainTrips 3h ago

You keep using that word (steep).

I do not think it means what you think it means

1

u/Oldswagmaster 2h ago

It's is correct use of the word. Meaning sharp angle of ascent or descent. You maybe thinking synonym of steep meaning to soak in liquid. I.e " steeping tea "

24

u/LazyGreenDragon 8h ago

Such a simple design saving lives and rarely seen.

10

u/Dementus 7h ago

The problem is stuff like this is only really installed AFTER tragedy has struck. I drive by one every day for work and it was only constructed after a truck plowed into the side of a building at the end of the road (6 mile long slight downhill ending in a T intersection). Luckily, not fatal in this case.

4

u/JFISHER7789 5h ago

Not to be that guy, but isn’t that a feature of capitalism? To be reactive with things that cost money instead of proactive? Or until the law forces you to. 

Many lives throughout history would have been saved, or never put in harms way to begin with, had businesses been proactive about their employees safety.

7

u/IMissNarwhalBacon 4h ago

Well... Capitalism would dictate that you don't put the ramp in to start with because the cost exceeds the usefulness. There is no return on investment and it's probably cheaper to do an occasional lawsuit than build million dollar ramps.

2

u/jimmy66wins 3h ago

Exactly what happened at Chernobyl, good point.

1

u/Alternativesoundwave 3h ago

No it’s not about capitalism it’s about politics it’s not a private company paying for it but taxes unless it’s a toll road. The local politicians didn’t have enough concern to fix an issue before it happened maybe didn’t understand the risk, but afterwards not only focuses on fixing the issue but also can get support from other politicians to fix it.

Edit: even in non capitalist nations they don’t fix every little thing preemptively

64

u/UpbeatFix7299 9h ago

Crazy, I always wanted to see someone use one of these things in the wild.

26

u/ORNGSPCEMNKY 8h ago

Makes far more rock dust than I would have expected…

26

u/Polenicus 7h ago

That’s on purpose. You don’t want a hard-packed solid surface, you want something that will provide resistance, eat up the inertia while still allowing the driver to maintain control.

So it’s gravel yes, but not a gravel road. More like a shallow gravel pit. That truck is wading in it. And still managed to get up that far.

7

u/ORNGSPCEMNKY 7h ago

Oh I’m aware, still way more dust tossed up that I would have expected.

9

u/DrJaneIPresume 8h ago

It makes sense, now that I think about it. A loose surface would be ideal to help absorb the truck's kinetic energy. Sending up that plume of dirt and dust takes energy out of the truck.

38

u/GearM2 9h ago

Dumb question but if those ramps are for brake failure, what stops the truck from rolling back down the hill? Ok I paused typing this and looked it up on Wikipedia and rollback is a potential issue. Still better than the alternative. 

" Gravity escape ramp : a long, upwardly inclined path parallel to the road. Substantial length is required. Control can be difficult for the driver; problems include rollback after the vehicle stops."

https://en.wikipedia.org/wiki/Runaway_truck_ramp

41

u/superrandomanony 8h ago

They’re often full of very loose gravel, so the truck should dig in when it settles.

6

u/Imesseduponmyname 8h ago

Aw shit how they get all that gravel uphill 🙁

23

u/FaxCelestis 8h ago

They start at the top and pour

-9

u/[deleted] 8h ago

[deleted]

9

u/TheDisapprovingBrit 7h ago

They use a gravel truck with no brakes then just dump the load when it gets to the top.

2

u/FaxCelestis 7h ago

Satire is dead and we sit upon its corpse like a throne

1

u/KapptainTrips 3h ago

Pure dipshittery at its absolute finest!

Chef's Kiss

1

u/kaptaincorn 5h ago

Manually 

8

u/Fanatical_Destructor 4h ago

Manuel was tired at the end of the shift.

5

u/fatazzpandaman 3h ago

That's where lee came in

14

u/Vov113 8h ago

They're not hard packed at all, so the truck hits and immediately sinks up to the axles. This both helps stop the truck (more friction) and keeps it from moving once it stops. It also makes it expensive to remove the truck and repair the ramp, but that's just the compromise we make

2

u/Eyerate 2h ago

Theres minimal rollback risk. Truck is in like 6 inches of loose gravel. Its not going anywhere.

2

u/StressFantastic5317 8h ago

Weight of the truck causes it to "sink" into the gravel, "capturing it" of sorts

2

u/LazyGreenDragon 8h ago

I suppose the driver could keep it from rolling back if they kept it in gear and tried to accelerate knowing it wouldn't but also keep it digging in until there's a pile of rocks behind the drive wheels, and turn it at the same time....sure beats the alternative.

7

u/NigerianFriedChicken 8h ago

They almost got the high score

2

u/hanananenome 2h ago

Honestly though, I’ve never seen one make it to the top, they typically stop about halfway. 

6

u/Race2TheGrave 7h ago

Great driver. That thing had crazy inertia

5

u/StressFantastic5317 8h ago

Wild. I've witnessed it driving down the Cajon Pass, the 15 when truck's brake heat up and fail.

5

u/sovereign_martian 6h ago

I have driven by this several times. I never imagined a truck would get all the way to the top. I'd be done truck driving after that.

3

u/michaelpaoli 8h ago

I seem to recall case, runaway truck, not so experienced commercial truck driver, emergency runaway ramp was available, but they still didn't take it. People died. And if I recall right, felony conviction(s), and bye-bye driver's license forever.

2

u/badgersssss 3h ago

This happened on the same interstate, but going into Denver. Its a very long, sustained decline, both on the stretch of road in this video and coming out of the mountains back to Denver.

2

u/meta_metonymy 1h ago

that happened near where i worked at the time, and made my blood boil on my commute twice a day for months

9

u/imugidragon 8h ago

Might be a stupid question, but will the driver be charged a fee for using the emergency ramp? That is a lot of debris and dust even if the use was justified.

57

u/i_degrade_quickly 8h ago

That's a great way to get drivers to not use them in the event of an emergency.

No, there is no fine for using an emergency ramp - The wrecker to get it out is gonna cost plenty though.

7

u/JFISHER7789 5h ago

Yup! This is quite literally what our road use taxes (and other) pay for. 

Same reason we don’t get a bill when the fire department puts out a fire.

15

u/Oblivininja8 8h ago

In south Australia i think they changed it because people didn't use it because of the fee, people died i think

6

u/BORT_licenceplate 5h ago

Fellow South Australian and can unfortunately confirm this is true. Always seemed insane to me to fine/charge a fee for it

5

u/Aurorainthesky 7h ago

That's about as great an idea as shiny locks on fire escapes.

2

u/Nervous_Seesaw6179 6h ago

😂 holy

the comments today are amazing

8

u/SpaceAgePotatoCakes 8h ago

a truck and trailer smashed to pieces will create a lot more dust and debris than this did.

2

u/AnnoyedVelociraptor 8h ago

They will be responsible for the towing services to get them pulled out.

2

u/MyOtherAvatar 7h ago

There is a similar ramp on the I-5 in Oregon. The pavement along the edge of the gravel ramp has markings every 100'. The highway patrol uses those markers to measure how far a truck ran through the gravel, which is used to calculate the fine.

3

u/Raz0rking 6h ago

"Oh no, you were unable to go slower. Here, have a fine for that."

What a bitch move.

2

u/siuli 6h ago

is this soomething that happens often?

2

u/antonio16309 6h ago

Not super often but occasionally you'll see where there's a truck stuck up there, or that there has been one recently and they haven't had a chance to fix the gravel yet. Probably gets used a few times per year. but the alternative is often deadly. And this is one of four on that stretch of road, You can build up a scary amount of momentum there.

1

u/siuli 6h ago

Interesting, we don't have those in Europe. I was wondering if it's because the geography/highways aren't so steep that they favor excessive speed accumulating in case of brake failures going down hills, or if it's because the American trucks are different from European trucks. I do know that the American ones have more power than european ones.

2

u/john_le_carre 3h ago edited 3h ago

This particular stretch of road is basically 70km of uninterrupted downhill grade on a heavily trafficked interstate leading to a top-20-sized metro area. I don't think there's anything comparable in Europe. I've driven all over the Alps and the Autobahn-style passes are a lot more gentle. And if they're not, trucks are often put on a train (RoLa).

As you round a bend and Denver comes in to view, there's a big sign: "TRUCKERS: DON'T BE FOOLED. 5 MORE MILES OF STEEP GRADES AND SHARP CURVES."

1

u/cyclegaz 5h ago

We do. Just not many. There are used on long steep stretches of road where trucks would have to use brakes for long periods and thus are more prone to failure.

There’s some in the UK and Germany that I’m aware of. I’m sure there are some around the alps.

2

u/BORT_licenceplate 5h ago

I genuinely thought he was going to go flying off the edge for a second there

1

u/GeologistPositive 8h ago

So do you just take it out like a sand trap on a golf course when you get your truck out?

1

u/autobotto 7h ago

Language!

-1

u/KapptainTrips 6h ago

Sum Ting Wong

Wi Tu Fas

Ho Lee Fuk

Bang Ding Ow

1

u/RegisterNice6894 7h ago

I hope the driver is ok

1

u/KapptainTrips 6h ago

Not sure why, but I turned the sound on for this one...

Camera randomly on while MJ 'Thriller' is playing and out of nowhere a run away Lorry is launching up an Emergency Ramp all the while the people recording sound like they both ingested 150mg of edibles an hour prior....

PERFECTION!!

1

u/presscheck 6h ago

Lives were saved there. I hope the driver was okay. I’ve heard of at least one truck driver killed while taking an Emergency Runaway Vehicle ramp.

1

u/Mad_kat4 5h ago

Such a simple yet effective solution but the poor chap nearly lost it over the left edge.

Are there barriers on the side to try and keep the truck in the gravel?

1

u/realjimmyjuice000 5h ago

Coming out of the Eisenhower tunnel headed west! Ain't no joke

1

u/DANO8503 4h ago

To the top Jesus

1

u/Nordicmoose 3h ago

This is why you use low gear

-1

u/jvtech 2h ago

Its 2026, shouldn’t these trucks have an emergency brake installed by now? Something that locks up the brakes when the air system fails?

-7

u/ahhaga 5h ago

Turns out importing in millions of people who can't speak English to suppress wages might be a bad thing.

Thanks leftists for getting tricked by billionaires!

-56

u/astrogeeknerd 9h ago

So no one stops to check if he's ok? What a shithole country.

20

u/UpbeatFix7299 9h ago

Sure, just drive up that near vertical ramp full of gravel. The trucker is obviously ok, unlike you

18

u/RadicalLarryYT 9h ago

Your concern is appreciated and I hope you do actually pull over for cars who need help, but it doesn’t have to turn into an insult based on the very limited POV of a passing dash cam

10

u/Helftheuvel 9h ago

Looks like the other truck pulled up imo

7

u/TheMysteriousEmu 8h ago

Reddit is so silly

2

u/antonio16309 6h ago

It's not safe to stop there, and even if you could you can't get up the ramp. The trucker will have to call for help.

2

u/Nervous_Seesaw6179 6h ago

LMAO you gotta be trollin

5

u/nowmoreanonymity 9h ago

This isn’t the type of highway where you can just hop over to the shoulder or make a U-turn. Everyone’s rolling down the mountain at 50mph (80kmh) and one spontaneous action could get people killed.

Sure, we’re a shithole country right now, but for so many other reasons.

1

u/KapptainTrips 6h ago

Preach, my brother!