1. added speed limits

    Closed
    #168741165 2 54 0 0

  2. speed limits

    Closed
    #168531758 0 20 0 0

  3. added speed limits

    Closed
    #168521907 3 23 0 0

  4. speed limits and a traffic light timer

    Closed
    #168521515 0 7 1 0