Analyst v5.0.0 Now Available! This latest version includes the following
Site Selection - Safety Analyst now includes a new analysis module to
perform systemic site selection. The
Systemic Site Selection enhancement expands the capabilities of Safety Analyst
so that a user can identify the most appropriate sites for implementation of a
LOSS – Specifying Variable Region Boundaries - The Modified LOSS metric
is similar to the LOSS concept presented in Chapter 4 of the AASHTO Highway
Safety Manual (HSM) and was introduced into Safety Analyst version 4.5.0. This
new release of Safety Analyst allows an analyst to define the LOSS region
boundaries using specific percentiles of the crash distribution as an option to
the original fixed region boundaries of 1.5 standard deviations above and below
the mean. For example, the analyst can
specify a lower boundary in the range of the 5th through the 45th percentile
(in increments of 5), and can specify an upper boundary in the range of the
55th through the 95th percentile (in increments of 5).
- The Safety Performance Report, introduced into Safety Analyst version 4.5.0,
now includes the calculation and display of observed crash rates in addition to
observed crash frequencies.
Summary Reporting of Fatal and of Severe Injuries Separately - The
Safety Analyst Crash Summary Report and Collision Diagram now allow
specification of the following severity level selection: Fatal, Severe, Fatal
and Severe, Fatal and All, PDO, and Total.
This selection applies to the observed crashes for the selected sites.
Default Crash Costs and Weights - Crash costs and weights are used in
economic analyses in Safety Analyst Module 3 to represent the benefits of
reducing crashes. These default cost
estimates and weights in Safety Analyst have been updated to reflect 2015
Logging and Analysis of Post Processor Data Warnings - The Safety
Analyst Data Management Tool has been modified to log post processing warnings
to a table in the data set database table rather than writing them to the
text-based log file. Additionally, a
tool has been developed display, sort, and filter the error and warning
messages. This enhancement makes the
debugging of data issues easier. The
tool also identifies invalid sites and crashes and provides statistics on the
numbers/percent of sites and crashes that are valid and the numbers of warnings
by warning type.
information, go to http://developer.safetyanalyst.org/aashto/index.php/Current_Events