[dsfyu404ed]

A school-bus or box truck that will basically get stuck everywhere if it doesn't have something under the driven axle. Braking is not what's limiting the conditions these vehicles can work in. Getting stuck because you stopped at a red light on a slight hill is more their problem which is what these chains solve.

[just_boost_it]

Giving drivers a sense of control that doesn't match up with how the vehicle performs in braking looks like a pretty big design flaw to me.

[flandish]

These have been around for decades. Additionally, a lot of “braking” with these bigger trucks is “engine braking” like jake brakes, compression release, exhaust release, etc.

Can slow a lot by “simply” letting the jake engage.

We use them on our fire trucks, engines, tankers, etc, here in New England. Some of these apparatus way upwards of 30ton.

[Shivatron]

A two-wheel drive vehicle with an open differential is limited in acceleration by only one wheel (the drive wheel with the least traction). However, braking is always the combined effect of all wheels.