Road Builders
It doesn't take a rocket scientist to decide which road has a lower general velocity when traffic volume increases. Would you say.. A? But if you want to be a rocket scientist, you can go ahead and measure the entrance velocity Ve, find the angle, bla bla...
Resultant velocity (Vr), which is original V (in green) + Ve, for A is less than B. B has an acceleration lane and smaller entrance angle, to bring Ve closer to original V, for a higher Vr.
It could be that adjoining road like B is more expensive to build (quality has been traded for cost management). Or due to the lack of planning, the vicinity of A has surroundings that prevent such design of B.
Example of A: KL-Seremban North-South expressway thru Sg. Besi
Example of B: Damansara-Puchong Expressway
Resultant velocity (Vr), which is original V (in green) + Ve, for A is less than B. B has an acceleration lane and smaller entrance angle, to bring Ve closer to original V, for a higher Vr.
It could be that adjoining road like B is more expensive to build (quality has been traded for cost management). Or due to the lack of planning, the vicinity of A has surroundings that prevent such design of B.
Example of A: KL-Seremban North-South expressway thru Sg. Besi
Example of B: Damansara-Puchong Expressway
posted by Zidni at 12:25 PM
3 Comments:
cost of building / maintaining stuff might / might not be according to local price levels (materials, labor, etc might come from outside sources)
but people's salaries usually are, so people generally want to pay less for tolls, etc. Or better yet, not pay at all
so generally, the companies that make and maintain these have a higher chance of operating at a loss
so they have to trade quality for cost management
that's what I think anyways
good thinking...
but
1) actual cost allocated has shrunk.. subcontracting until the real actuator is class F. i hv even heard 14 layers of subcon..
2) litrak, plus, silk, metro prime, etc2, so many companies handling the business - since im seeing many of them, i think it's profitable. do you know that the income of the toll is like the only financial status that's not revealed to anybody at all. maybe PM or just the finance minister.
jalan kat m'sia ni.. semua x btol.. pusing sana sini, tp yg bertol byk la :P
and that what i think anways too
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