1. BLACKSPOT CASE STUDIES –
CENTRAL JAVA
Investigations of 8 blackspots near Semarang – April 2012

2. BLACKSPOT 1 – DEMAK 12.5KM

4. 4 5 6 7 8 9 10 11 12 13 14
12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.6 12.6
12.6 12.6
14/05/2011 25/09/2011 03/08/2011 31/10/2011 11/05/2011 28/11/2011 18/01/2012 18/03/2011 10/09/2011 18/08/2011 30/09/2011
21:30:00 05:00:00 06:00:00 11:30:00 17:15:00 08:00:00 19:00:00 21:30:00 05:00:00 16:30:00 20:00:00
0 0 0 0 1 1 0 0 1 1 0
0 0 0 0 0 0 0 0 0 0 0
2 1 1 2 2 1 1 3 0 0 2
3 2 2 1 2 2 3 3 2 2 3
fine fine fine fine fine fine fine fine fine fine fine
good good good good good good good good good good good
m/c m/c m/c m/c mini bus m/c m/c m/c mini bus
heavy truck m/c
m/c m/c m/c m/c m/c m/c
m/c
m/c
41 63 3 93 41 4 41 4 3
41 91
1 1 1 1 1 1 1 1 1 1 1
7 7 7 7 7 7 1 1 7
7 7
1 1 1 1 1 1 1 1 1
1 1

5. Demak 12.5km

6. Demak 12.5km

7. Demak 12.5km

8. Demak 12.5km

9. Demak 12.5km

10. Demak 12.5km

11. Demak 12.5km

12. Demak 12.5km

13. Demak 12.5km

14. Demak 12.5km

15. Demak 12.5km

16. Demak 12.5km

17. Demak 12.5km

18. Demak 12.5km

19. RECOMMENDATIONS FOR U TURN:
 Speed restriction signs at 1km spacing's along
Pantura through Demak
 Relocate U turn west by 15m (approx) to make a T
junction with side road
 Make the U turn more conspicuous
 Regulatory signs both sides
 Warning signs 200m and 100m in advance
 Pavement arrows – 3 pairs – both approaches
 Edge line both sides of each carriageway
 Paint kerbing for last 100m each approach

20. RECOMMENDATIONS FOR BRIDGE:
 Seal the shoulder on the last 100m approaching the
bridge from the west.
 Make the bridge more conspicuous
 Width markers both sides
 Edge line both sides of each carriageway