Making TransJakarta a World Class BRT System - ITDP | Institute for ...

3.5
2.5
1.5
0.5
3
2
1
0
0 10 20 30 40 50 60
VI.4.b.i. Existing Typical Cross Section
Type
Corridor 2- Flamboyan toll road typical section (Gading, Pulomas, Asmi, Pedongkelan)
sidewalk
(south)
Traffic
e>w local
Sepa
rator
Traffic
e>w express
Island
traffic
w>e
express
Sepa
rator
traffic
w>e local
sidewalk
(north)
width 5.8 6.7 0.85 6.7 10.17 7.6 1.5 7.25 9
sum 5.8 12.5 13.4 20.05 30.22 37.82 39 46.52 55.52
This 3.0 km stretch is basically express, and there are only two signalized intersections
located at:
? Kelapa Gading: 500 meters west to beginning.
? Under the toll road (Wiyoto Wiyono) at the west extremity of the section.
These two points are already quite congested and need improvement to avoid increase of
congestion after the BRT corridor is implemented. This topic will be discussed
separately.
VI.4.b.ii. DisHub and ITDP Proposed Typical TransJakarta Cross Sections
According our previous calculation, 9.7 meters width would be enough for general
traffic, therefore on the E > W side (narrower than W > E) if from the (6.7 + 6.7) = 13.4
meter is taken 3.3meters for BRT lane, the remaining 13.4 - 3.3 = 10.1 meters of the
existing road would be enough for general traffic (without cutting the central island). But
with the present division, this would mean only (6.7 - 3.3) = 3.4 meters for the express
road, and we do not recommend it (need at least two lanes). The alternative would be to
remove the separator and operate with only three lanes without express and local.
However, field verification showed that at some places there is a considerable difference
of level between the local and express roads, up to 30 cm, and costs of levelling both
lanes might be too high. Therefore, we consider cutting the central island and separators
to maintain two express lanes for general traffic is acceptable.
VI.4.b.iii. Dishub and ITDP Proposed Cross Section at TransJakarta Station Stops
DisHub is recommending passing lanes at the bus station stops along this part of the
corridor. However, our analysis indicates that boarding and alighting volumes are low,
Final Recommendations for TransJakarta, p. 101