you are right the concept similar NPE, but consider full elevated,

denai alam toll & mutiara damansara toll elevated, RRIM toll on ground
Below was the study introduction, of course change may apply, key was highlighted in red

3.2.1  Lane Requirements
The Expressway is generally a dual 3 lane carriageway of with 3.5m lane widths and
3m paved shoulder with a design speed of 80 kph.  In areas with constraints,
particularly in urban conditions and in areas of difficult terrain, a lower design speed
and double deck with cross sectional requirements may be considered but would be
subjected to the approval of the Government.

3.2.2  Interchanges
The project involves the construction of thirteen  grade separated interchanges.
These interchanges are:
i)  Puncak Perdana Interchange
ii)  Alam Suria Interchange
iii)  Denai Alam Interchange
iv)  Kg. Melayu Subang Interchange
v)  Galaksi Interchange
vi)  Subang 2 Interchange
vii)  Subang Airport Interchange
viii)  RRIM Interchange
ix)  Surian Interchange
x)  Kenanga Interchange
xi)  Mahogani Interchange
xii)  Damansara Perdana Interchange
xiii)  Penchala Interchange

3.2.3  Toll Plaza
There shall be three (3) main line toll plaza on the expressway which are located
before Denai Alam Interchange, RRIM, and Mutiara Damansara. Both manual and
electronic collection shall be adopted in these open toll system. Table 3.2.1 shows
the location of the toll plazas and the minimum lane requirement. The names of the
toll plaza will be determined and approved later by LLM. The numbers of toll lane
required for each toll plaza are based on the forecast traffic volume and the type of
toll collection system used.

google this, you will get a pdf link for a study case.
"The Expressway is generally a dual 3 lane carriageway of with 3.5m lane widths and
3m paved shoulder with a design speed of 80 kph.  In areas with constraints,
particularly in urban conditions and in areas of difficult terrain, a lower design speed
and double deck with cross sectional requirements may be considered but would be
subjected to the approval of the Government. "

this is how DASH highway will pass through DP area

I think will kena my emerald la. Damn it! Why the road so weired wan... A curve like that... Stupid design!

that the reason no sharing on the link in public.
i think they now realize the hole, so bad.

Just talked to my friend- contractor that involve soil investigation for DASH highway. Confirm the highway will start from Mutiara Damansara to Shah Alam. (project already started last month)

lol, i need to ask him again. He only said Mutiara Damansara.