Write Up:

 While the ultimate goal is to eliminate work zone crashes, the goal for this measure is to reduce the number of truck-mounted attenuator hits below the previous 4-year average.  In 2019, MoDOT had 29 reported TMA hits resulting in 16 employees seeking medical attention.  Records for 2019 reported one less TMA hit than that 4-year average.  This quarter, there were seven reported work crews with a protective TMA hit: three pot hole patching, one sweeping, one cleaning drains, one sealing a bridge deck and one was picking up litter.   Four of the seven drivers had to seek medical care.  Three of these operations sited improper lane change in the police report, two sited distracted driving and one involved a hit and run.   In 2019, 80% of TMA hits were on interstates, and all but one were on divided highways.

Purpose of the Measure:

 MoDOT owns more than 300 truck or trailer mounted attenuators that are used to save lives by absorbing the impact of a crash in a work zone.   By measuring the number of TMA hits by types of operation, MoDOT is able to identify higher risk activities that could result in a crash and share this information to develop strategies to eliminate work zone crashes. 

Measurement and Data Collection:

When a TMA incident occurs, a Claim Report is completed.  The claim reports and any associated police reports are collected by Risk Management Technicians for review and interpretation.  Only incidents where the TMA was involved are included in this data.   This measure is reported based on quarters of a calendar year.