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Monday, September 27, 2010

North-south highway - 3rd lanes

Assalamualaikum & greetings to all readers. Just got this from my friend who builds highways. I feel like to share with the reader all the information.

I have another friend who works as pavement contractor and he shared the same thought!

 All you frequent users of the North-South Expressway Be more cautious when driving on the third lane. 

North-south highway 3rd lanes 

I am a frequent user of our North-South Expressway and I have this IMPORTANT experience to highlight and share:-
I am a building contractor based in Penang with over twenty years of experience and I have been driving my 5 series BMW (latest generation and a dammed solid road-holding car) each time I travelled to KL. Lately, the new extended 3 lanes highway had been opened up for use and since then, I have also been using it quite often.

HOWEVER, when I used it each time it is WET, I can really 'feel' that the new road surface is extremely SLIPPERY! To share with some of you, my car comes with a built-in traction control mechanism (skidding prevention mechanism) and you can feel it each time it is activated. Previously, I don't come across this kind of slippery feel except when I drive over a paddle of water at certain speed.

From my observation as a building contractor, the 'wearing course' of the new road surface could be TOO FINE OR TOO SMOOTH and TOTALLY UNSUITABLE for highway use! 

The wearing course (top premix layer) mix design for highways should be of minimum 20mm coarse aggregate mix that will give us the required bond between the surface and our tyres. Fine wearing course (14mm coarse aggregate size and below) is only suitable for normal road. (A proper test is needed to be carried out to determine the mix design of the wearing course).

Since the opening of the three lanes highway, I had seen cars skidding in front me or in the opposite direction and approximately 2 weeks ago, one of my friends who is also a frequent user of our NSE, came to share with me about his slippery feeling as well as the many skidded cars he had seen lately.

I am highlighting this to TV3 and The Star with the hope that a thorough investigation could be carried out immediately to find out how or what causes the bus to skid. A proper and independent test needed to be carried out urgently to determine the design mix of the wearing course. THIS CAN SAVE LIVES.



sz | m.s.s said...

isyk..risau juga tu..tu imported+luxury car rasa slippery, inikan plak keta nasional nih..adehhhh

midonz said...

sz : maklumat ni sy dapat dr kawan2 tempat kerja.. so sy forward kan kat dalam blog ni untuk dikongsikan bersama... sepanjang pengalaman memandu selama 11 tahun ni alhamdulillah belum terjadi apa2 kat sy lagi.. mohon dijauhkan drpd segala kecelakaan..


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