Positive Train Control

Positive train control (PTC) is a system of functional requirements for monitoring and controlling train movements to provide increased safety.

The American Railway Engineering and Maintenance-of-Way Association (AREMA) describes Positive Train Control as having these primary characteristics:

  • Train separation or collision avoidance
  • Line speed enforcement
  • Temporary speed restrictions
  • Rail worker wayside safety.

Read more about Positive Train Control:  Overview, Basic Operation, Areas Where in Use, See Also

Famous quotes containing the words positive, train and/or control:

    Blessed be the inventor of photography! I set him above even the inventor of chloroform! It has given more positive pleasure to poor suffering humanity than anything else that has “cast up” in my time or is like to—this art by which even the “poor” can possess themselves of tolerable likenesses of their absent dear ones. And mustn’t it be acting favourably on the morality of the country?
    Jane Welsh Carlyle (1801–1866)

    Children must eventually train their own children, and any impoverishment of their impulse life, for the sake of avoiding friction, must be considered a possible liability affecting more than one lifetime
    Erik H. Erikson (20th century)

    I think it a much wiser thing to secure for the thousands of mothers in this State the legal control of the children they now have, than to bring others into the world who would not belong to me after they were born.
    Susan B. Anthony (1820–1906)