2016 Manual for Assessing Safety Hardware (MASH)
The American Association
of State Highway and Transportation Officials (AASHTO) and FHWA have agreed upon the implementation of the 2016 Manual for Assessing Safety Hardware (MASH)
crash standards for roadside safety hardware and sunset dates for non-MASH compliant
devices. The MASH testing criteria replaces NCHRP-350 testing criteria and
better reflects the impact of the current vehicle fleet with barrier. The joint
implementation agreement states that NCHRP-350 temporary work zone devices in
good condition that are approved for use in Ohio by the Department may continue
to be used after this sunset date through the service life of the device, as
determined by the Department. The sunset dates for non-MASH Compliant devices
are listed below:
ODOT will determine if a product or system is eligible for use in
Ohio based upon the below methodologies. In conjunction with these
methodologies ODOT will determine if a product meets the needs of the State of
Ohio based on considerations including but not limited to ease/clarity of installation,
cost, maintenance requirements or in-service performance (in Ohio or other
states). Satisfying one of the below methodologies does not guarantee approval
if a device or system does not meet the needs of Ohio as determined by ODOT. ODOT reserves the right, as granted by the July
25, 1997 FHWA memorandum, “Action: Identifying Acceptable Highway Safety
Features”, to reject a product or place limitations on its use, require
additional testing, or require in-service evaluation.
Method 1: FHWA Eligibility Letter - Eligibility letter issued by FHWA. Copies of hardware eligibility letters issued by FHWA can be found here.
- Method 2: ISO 17025 Testing Facility - ODOT would evaluate the testing results and report issued by a
testing house. This may include use of a partial test matrix as deemed
appropriate by the testing facility.
- Method 3: Research Based - This includes
NCHRP reports as well as miscellaneous research methodologies such as computer
simulation, component testing, crash testing, etc. Approval would be based upon
ODOT review and acceptance of the applicable research. 3rd party review could
potentially be used by ODOT (ex. ISO 17025 testing facilities, researchers,
- Method 4: Approval by Other States - ODOT would review information, analysis, test results, etc. used
by the original approving state as a basis for their approval. 3rd party review
could potentially be used by ODOT (ex. ISO 17025 testing facilities,
researchers, consultants, etc.)
- Method 5: Existing Systems with no MASH Equivalent - Existing NCHRP-350 systems would remain eligible for use until
such a time that an acceptable equivalent MASH system that meets the needs of
Ohio and is available and approved by ODOT for use. ODOT will provide the Ohio
FHWA Division Office a plan describing our efforts to replace the existing
NCHRP-350 systems with a MASH compliant system.
- Method 6: Revisions to an Existing Approved System - Manufacturers/sponsors of changes to existing approved MASH
systems would be required to certify the proposed changes do not affect the
systems’ ability to be MASH compliant. Included with the certification would be
supporting information, analysis, etc. for ODOT review. ODOT may accept,
reject, utilize a 3rd party review or require the submitter to obtain a letter
from an ISO 17025 testing house concurring with their conclusions.
A copy of the Memorandum regarding the AASHTO/FHWA
Joint Implementation Agreement for the AASHTO Manual for Assessing Safety
Hardware (MASH) can be found here.
On May 26, 2017 FHWA issued a memo about changes to
how requests for Federal-aid eligibility letters for roadside safety hardware
systems are accepted. It is located here.
A full copy of the MASH ODOT Roadway
Safety Hardware Eligibility Process can be found here.
Information about Roadside Safety New
Product Evaluation Process can be found here.
For any questions that are not addressed by the MASH FAQs page