Alternative Safety Measures (ASMs)

ASMs may also be proposed to the FRA who will determine the effectiveness used in Quiet Zone Risk Index calculations. There are 3 types of ASMs:
  • Modified SSMs (i.e., channelization devices less than
    60-foot
     long).
  • Non-Engineering ASMs (i.e., traffic law enforcement program).
  • Engineering SSMs (i.e., engineering improvements to address sight distance).