Speed Management and Safe Crossing on Dhaka-Sylhet Highway (N2) in Bangladesh
Speed-Management-and-Safe-Crossing-An-Experience-in-Dhaka-Sylhet-Highway-N2-in-Bangladesh
Speed-Management-and-Safe-Crossing-An-Experience-in-Dhaka-Sylhet-Highway-N2-in-Bangladesh
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Based <strong>on</strong> the reducti<strong>on</strong><br />
<strong>in</strong> speed reducti<strong>on</strong><br />
after c<strong>on</strong>structi<strong>on</strong>, the<br />
estimated reducti<strong>on</strong> <strong>in</strong><br />
fatalities us<strong>in</strong>g Nilss<strong>on</strong>’s<br />
<str<strong>on</strong>g>and</str<strong>on</strong>g> Elvik’s formula’s<br />
comb<strong>in</strong><strong>in</strong>g two locati<strong>on</strong>s<br />
comb<strong>in</strong>ed, the average<br />
estimated reducti<strong>on</strong><br />
<strong>in</strong> fatalities is 59%<br />
us<strong>in</strong>g Nilss<strong>on</strong>’s formula<br />
<str<strong>on</strong>g>and</str<strong>on</strong>g> 60% us<strong>in</strong>g Elvik’s<br />
formula ( Table 6.4 <str<strong>on</strong>g>and</str<strong>on</strong>g><br />
Figure 6.2 )<br />
Figure 6.2: Relati<strong>on</strong> of speed with crash reducti<strong>on</strong><br />
Table 6.4: Estimated fatalities reducti<strong>on</strong> us<strong>in</strong>g Nilss<strong>on</strong>’s (1982) <str<strong>on</strong>g>and</str<strong>on</strong>g><br />
Elvik’s (2009) formulas<br />
Estimated reducti<strong>on</strong> <strong>in</strong> fatalities Nilss<strong>on</strong>’s formula Elvik’s formula<br />
Nilkuthi 57% 58%<br />
Kunderpara 61% 62%<br />
Average for 2 locati<strong>on</strong>s 59% 60%<br />
6. 2 Crash reducti<strong>on</strong><br />
The Crash data collected <strong>in</strong> all three locati<strong>on</strong>s dur<strong>in</strong>g before c<strong>on</strong>structi<strong>on</strong> period ranges<br />
from June 1st 2013 to December 31st 2014 (19 m<strong>on</strong>ths) <str<strong>on</strong>g>and</str<strong>on</strong>g> the after c<strong>on</strong>structi<strong>on</strong> period<br />
from May 1st 2015 to January 31st 2016 (9 m<strong>on</strong>ths). Table 6.5 shows the total number of<br />
crashes, <strong>in</strong>juries, <str<strong>on</strong>g>and</str<strong>on</strong>g> fatalities <strong>in</strong> the before <str<strong>on</strong>g>and</str<strong>on</strong>g> after periods. The numbers shown are the<br />
comb<strong>in</strong>ed totals for the 3 <strong>in</strong>terventi<strong>on</strong> locati<strong>on</strong>s.<br />
Table 6.5: Number of crashes, <strong>in</strong>juries, <str<strong>on</strong>g>and</str<strong>on</strong>g> fatalities <strong>in</strong> before <str<strong>on</strong>g>and</str<strong>on</strong>g> af ter period<br />
Total for period<br />
(3 locati<strong>on</strong>s comb<strong>in</strong>ed)<br />
Before<br />
(19 m<strong>on</strong>ths)<br />
Af ter<br />
(9 m<strong>on</strong>ths)<br />
Number of crashes 175 28<br />
Number of <strong>in</strong>juries 377 48<br />
Number of fatalities 19 3<br />
Analysis shows the fatalities <strong>in</strong> the before period <strong>in</strong> all three <strong>in</strong>terventi<strong>on</strong> locati<strong>on</strong>s, categorized<br />
Report <strong>on</strong> <str<strong>on</strong>g>Speed</str<strong>on</strong>g> <str<strong>on</strong>g>Management</str<strong>on</strong>g> <str<strong>on</strong>g>and</str<strong>on</strong>g> <str<strong>on</strong>g>Safe</str<strong>on</strong>g> <str<strong>on</strong>g>Cross<strong>in</strong>g</str<strong>on</strong>g> <strong>on</strong> <strong>Dhaka</strong>-<strong>Sylhet</strong> <strong>Highway</strong> (<strong>N2</strong>) <strong>in</strong> <strong>Bangladesh</strong> 38