The Indiana Department of Transportation (INDOT) has been testing high
tension cable barriers on two stretches of Indiana interstate for about
2½ years. In late 2005, barriers were installed on Interstate 65
between Zionsville and Lebanon and on Interstate 69 between Noblesville
and Anderson. In the three years prior to those installations, the INDOT
reported that the same two sections of Interstate combined had 12 fatal
crashes, 11 serious injury accidents, and 69 accidents involving injury.
The13-mile test section on I-65 was hit 69 times within the first eight
months of its installation; however, there were no vehicles permitted
to pass through the barrier and there were no serious injuries in the
crashes where the barrier was struck. The cable barrier stopped also stopped
at least one semi tractor-trailer.
Beyond those initial eight months, the success of the barriers have continued.
Since their installation, those same stretches have had no fatal crashes,
five serious accidents and only 13 accidents involving injury. INDOT reported
this as an 84 percent reduction in fatalities and accidents involving
injury. Most importantly, the cable barrier has provided a 100 percent
stoppage of vehicles crossing the median. The success of these test sections
has prompted an increase look on the part of the INDOT to place additional
barriers throughout the State. Areas of increased risk and high volume
accidents are set to get attention first.