i didn't know there's an emergency escape ram. it really dangerous for heavy vehicles due to tremendous braking. i experience lost of brake before but its temporary. brake is usually the main problem .

haha! agreed!
my brake overheat ady when i was downhill, before reaching the post before the roundabout at goh tong.
when i realized it, i have to downshift to gear 2, to gear 1 just to get the stall, and shift it back to gear 2, keep pressing the brakes, eventhough the grip is not totally lost, it keeps going, after the sharp S corner reaching the guard post, i pull the handbrake, wait till the bump slows us down, and i managed to stop on the left side road. wait till half an hour, test for few metres, and drive slowly. really sked during that time.

since then, i always go for mid-end, not cheap, nor inexpensive brake pad. keep my disc skimmed if bengkok.

That kind of length is not enough for a heavy moving vehicle to slow down, at the end of the ram is also wall & ravine?

Handbrake is the same brake as pedal brake just for the back wheels, so maybe not the brake pad but the brake hydraulics overheated?

"Brake fade" is a condition caused by overheating in which braking effectiveness reduces, and may be lost. It may occur for many reasons. The pads which engage the rotating part may become overheated and "glaze over", becoming so smooth and hard that they cannot grip sufficiently to slow the vehicle. Also, vaporization of the hydraulic fluid under temperature extremes or thermal distortion may cause the linings to change their shape and engage less surface area of the rotating part. Thermal distortion may also cause permanent changes in the shape of the metal components, resulting in a reduction in braking capability that requires replacement of the affected parts.

When going downhill happens all the time where people got jam break bcos of overheat and overuse (normal as ppl common sense use break)
Just an advice dont keep using the break but use a lower gear to drag the car and press the break on n off NOT continously.
Especially when bringing heavy load/more passenger the break pad works even harder.
The overload of the bus + the wearing out of break pad might be the main course this time.

MAINTENANCE OVERLOOKED

Air brakes are typically used on buses, trucks, tractors and other heavy-duty vehicles; they require constant inspection and attention to ensure proper operation and performance. However, statistics show that air brake maintenance and adjustment is often overlooked.

Brake malfunction accounted for 56.6% of out-of-service violations cited during roadside inspections. This was followed by lights (11.1%), loading (9.3%) and tires/wheels (8.5%), according to a 2004 study by the Commercial Vehicle Safety Alliance (CVSA), a Washington, D.C.-based association of state, provincial and federal officials that administers and enforces motor carrier safety laws in Canada, Mexico and the United States.

It's not surprising, then, that air brake deficiency is cited as one of the major factors in truck crashes, according to the 2006 Large Truck Crash Causation Study, conducted by the U.S. Department of Transportation's (DOT) Federal Motor Carrier Safety Administration and the National Highway Traffic Safety Administration (NHTSA).

In the category of "all trucks involved in crashes nationwide by specific factors," the study shows that brake deficiency was cited in 37,000 (or 26% of) vehicle crashes. This compares with crashes resulting from prescription drug use (26%), travelling too fast for conditions (23%), weather-related factors (14%), fatigue (13%), aggressive driving (7%), jackknife events (5%), cargo shift (4%) or engine, fuel system or exhaust deficiency (1%). It should be noted that multiple causes could be cited for a single crash.

It's unclear whether these crashes could have been prevented with proper air brake maintenance, but maintenance is only part of the picture. Industry surveys repeatedly determine that truck drivers and mechanics need more education and awareness of how air braking systems operate and how to inspect and maintain them.

deswai some cars install parachute to reduce speed and increase drag...

oh waii..

Ya, some of the bus provide seat belt but not compulsory to wear it.

Taxi also, always from KLIA to KL. those taxi drive like F1. When i wear seat belt, the driver said 'tak payah pakai kot' tak saman punya!'
I said wtf man, i wear it for safety, not to avoid saman.

deswai some cars install parachute to reduce speed and increase drag...

oh waii..

got seat belts also no use. enforcement problem

ask yourself if every bus provided with seat belts, how many will wear them ?

deswai some cars install parachute to reduce speed and increase drag...

oh waii..

imagining buses with loads of passengers, downhill, cornering, with parachute behind.. 

alang alang pasang wing saja le

will auto deploy when going off ground

jet engine behind boost lift off

then pasang drop hook for emergency brake