45 MPH Panic Stop on Low-Friction Surface (Loaded Trailer)

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30:07

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What happens here

The vehicle is driven onto a specialized low-friction surface, designed with ceramic tiles and sprinklers to simulate ice. The driver applies normal braking while transitioning onto this slippery surface. The goal is to demonstrate how the Hydrastar ABS system prevents wheel lock-up and maintains control even when only half the vehicle is on the low-friction surface, which is typically a challenging scenario known as a 'mu-split'. The system actively evacuates pressure as wheels lock up, allowing the ABS to manage braking effectively.

Goal: Demonstrate the Hydrastar system's ability to maintain control and prevent lock-up on simulated ice (low-friction surface).

Tools and materials

Hydrastar Hydraulic ABS System Hydrastar — Operating the trailer brakes during the test
Low-Friction Test Track — Providing a controlled slippery surface for braking tests
Pratt Dump Trailer — Subject of the braking test

What they say

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sprinklers going on them. >> Okay. And so, this simulates ice, and it really is just like >> So, this is pretty standard in the automotive industry >> where we run water across tiles to uh validate our ice testing without having the true surface. >> Can you go onto it? And then I want to show these guys what it takes just to to take off from this so that these guys know that we're truly going to be on some really slick surfaces. >> Yeah. >> Well, thanks for letting me out right in the water, Dan. >> You're welcome. Okay. Okay. So, this is a 25 mph full stop on full ice. >> Yeah. So, we're going to start braking just before the tiles. So, that way we build up the brake pressure in the system. And as the wheels lock up, we're going to have to evacuate all that pressure and let the ABS uh dump the pressure so the vehicle is stable. Still come to a stop. So Dan, it's that ABS systems allowing you to maintain control when you're now are you coming to a full panic stop when you're doing that or what? For that one, I was actually doing normal braking as a transition >> because the the amount of pressure that's in the system when you're on the pavement is acceptable for that surface, but then as we move to the ice, there's not enough friction available. So, the wheels immediately lock. So, we don't need to do a panic maneuver to get into full ABS on this lower surface. >> Ah, okay. Okay. But the ability to maintain control is part due to the ABS system compensating. Correct. >> Absolutely. Yeah. We have to get that pressure out of the system and then the wheels can recover and roll at a

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