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Successes in Reducing Highway FatalitiesKathy Harvey, MoDOT
State Design EngineerJuly 16, 2008Albuquerque, N.M.
Fatal Crash LocationsAre Random
Fatal Crash TypesAre Not Random
Identifying TheEssential Eight
1. Primary Seat Belt Law2. Public Education3. Targeted Enforcement4. Punish Drunk Drivers
5. Median Cable Barrier6. Rumble Strips7. Signs & Stripes8. Shoulders
SystemImprovements
With a 32,000-mile system, where to start?
System-wide Solutions
Major & Minor Roads
Major Minor
Roadway Miles 5,500 26,500
Miles Traveled 80% 20%
Fatalities 45% 55%
• Build good projects everywhere, instead of perfect projects somewhere.
• By doing so, the entire system improves, not just a few locations.
The First Ground Rule…
Missouri Progress Guard cable
• 500 miles of cable installed on our interstates since ’04.
• Low and High Tension.
• Studied all reported cross-median crashes, 1999-2005 (1,400)
• 95% success rate
• Vehicles did not enter opposing lanes.
Safety Analysis: Guard Cable I-70 Cross-Median Fatalities
0
5
10
15
20
25
30
1999 2000 2001 2002 2003 2004 2005 2006 2007*
Cro
ss-M
edia
n F
atal
itie
s
0
20
40
60
80
100
120
140
160
180
200
Gu
ard
Cab
le In
stal
lati
on
(m
iles)
Safety Analysis: Guard Cable I-44 Cross-Median Fatalities
0
5
10
15
20
25
30
1999 2000 2001 2002 2003 2004 2005 2006 2007*
Cro
ss-M
edia
n F
atal
itie
s
0
30
60
90
120
150
180
210
240
270
Gu
ard
Cab
le In
stal
lati
on
(m
iles)
Safety Analysis: Guard Cable Interstate Cross-Median Fatalities
48
52
40
50
26
9
0
20
40
60
2002 2003 2004 2005 2006 2007
Fata
litie
s
Missouri Progress Smooth Roads Initiative
• Made 2,200 miles of our major roads safer.
• Smoother pavement, brighter striping, rumble stripes.
• 2005-2006.
• Early completion estimated to save 14 lives and prevent 589 injuries.
Smooth Roads Initiative
TREATMENTS
• New Roadway Surface
• Asphalt - Overlay
• Concrete - Diamond Grind
• 6” Edgelines: Rumble Stripe (Epoxy)
• 6” Lane Lines: 3M “Waffle Tape”
• Some wet-reflective
Smooth Roads Initiative
• Delineate everything
• Emergency Reference Markers
• Sign upgrades
TREATMENTS
Missouri Progress Better Roads, Brighter Future
Focusing on 5,573 miles that carry 80 percent of all traffic – work includes surface treatments, wider stripes and paved shoulders.
Will bring major roads up to 85 percent in good condition by end of 2011.
Better Roads, Brighter FutureTREATMENTS• All major roads (5,500 mi) will have
• Minimum 4-foot paved shoulder
• Smooth driving surface
• Improved signing
• 1,000+ miles will receive Edgeline and Centerline rumble stripes
Imbed Safety into Policy• Rumble Stripes (Edgeline &
Centerline)
• All major roads
• All minor roads with crash history
• 6-inch Stripes for Major Roads
• All Edgeline
• Multi-lane skips
• Curve Speed Plaques
• Every Curve/Turn sign
Missouri Progress
• Missouri led the nation in saving lives in 2006.
• Of the 868 fewer traffic deaths nationwide, Missouri accounted for 161 of them.
Safety Analysis: Saving Lives Missouri Fatalities
1098
1208
1232
1130
1257
1096
1000992
900
1000
1100
1200
1300
2001 2002 2003 2004 2005 2006 2007 2008
Year
Fat
alit
ies
Missouri Progress
• 21 percent decrease in fatalities from 2005 to 2007.
• 9 percent decrease in fatalities from 2006 to 2007.
• 1,257 fatalities in 2005.
• 1,096 fatalities in 2006.
• 992 fatalities in 2007.
• Haven’t had fewer than 1,000 fatalities since 1993 – 15 years
ago.
How We Know it’s Working…
The Future?
• The possibility of truck-only lanes on I-70.
• SEIS underway.
The Future?
• Shared Four-Lane.
• One under construction now.
For More Information:Kathy Harvey, State Design EngineerMissouri Department of [email protected]