U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
AASHTO
350 Implementation Task Force
Summary of Implementation Issues by Hardware Type
Safety Hardware Type | NCHRP Report 350 Implementation Dates1 and Caveats | Work to be Done | ||
Use in New Installations2 | 3R Projects 3 | System-wide Replacement | ||
Longitudinal Barriers: Guardrails, Bridge Railings, and Median Barriers | October
1, 1998 4 (Except weak-post w-beam system) |
October
1, 1998 4 (Replacement of existing hardware meeting 230 is not required) |
Not required. |
- Test MB4 (SGM06b)
|
Guardrail to Bridge Rail Transitions | October
1, 20025 (Oct 1, 1998 meet 230) |
October
1, 20025 (Replacement of existing hardware meeting 230 is not required) |
Not required. | - Develop and test new transition designs to meet 350. |
Guardrail Terminals | October
1, 1998 (Except cable guardrail terminals6) |
October
1, 1998 (Replacement of existing hardware not meeting 350 is required) |
Not required beyond FHWA memo of 29 Sept. 947. |
- Develop and test
cable guardrail terminal |
Crash Cushions | October 1, 1998 | October
1, 1998 (Replacement of existing hardware meeting 230 is not required) |
Not required. | - Test steel drum system. |
Work Zone Category I Devices8 | October
1, 1998 New devices purchased after 1 Oct 98 must comply to 3509. (Agencies can phase out existing devices as they complete their normal service life) |
October
1, 1998 New devices purchased after 1 Oct 98 must comply to 3509. (Agencies can phase out existing devices as they complete their normal service life) |
Not required. | None. |
Work Zone Category II Devices10 |
October 1, 2000 |
October
1, 2000 New units purchsed after 1 Oct 00 must comply to 35011. (Agencies can phase out existing devices as they complete their normal service life) |
Not required. | - Crash test existing devices11 |
Work Zone Category III Devices12: Devices LIsted in Category II but Having Masses > 45 kg "expected to cause significant occupant velocity change" | October
1, 2002 Barriers with joints that fail to transfer tension and moment from segment to another must be updated by Oct 1, 2000 New units purchased after Oct 1, 2002 shall comply with 350. (Agencies can phase out existing devices as they complete their normal service life, except that barriers with joints that fail to transfer tension and moment from segment to another will not be acceptable after Oct 1, 2000, unless demonstrated to be crashworthy 13) |
October
1, 2002 Barriers with joints that fail to transfer tension and moment from on segment to another must be updated by Oct 1, 2000 New units purchased after Oct 1, 2002 shall comply with 350. (Agencies can phase out existing devices as they complete their normal service life, except that barriers with joints that fail to transfer tension and moment from segment to another will not be acceptable after Oct 1, 2000, unless demonstrated to be crashworthy 13) |
Required afeter 1 Oct 02 for devices that have not been demonstrated to be crashworthy13 will not be acceptable |
- Crash test existing
devices |
Work Zone Category III Devices: Truck-Mounted Attenuators & WZ Crash Cushions | New units purchased after 1 Oct 98 must comply to 350. (Agencies can phase out existing TMAs and WZ crash cushions as they complete their normal service life.) | New units purchased after 1 Oct 98 must comply to 350. (Agencies can phase out existing TMAs and WZ crash cushions as they complete their normal service life.) | Not required. | None. |
Work Zone Category IV Devices15 | Delayed16 Announcement of an implementation date will be made by 1 Oct 00. | Delayed16 Announcement of an implementation date will be made by 1 Oct 00. | Decision delayed | - Develop new designs that meet 350. |
Breakaway Devices 17 | October 1, 199817 | October 1, 199817 | Not required | None. |
Miscellaneous Hardware18 | Delayed19 Announcement of an implementation date will be made by 1 Oct 00. | Delayed19 Announcement of an implementation date will be made by 1 Oct 00. | Not required | - Develop and test new designs to meet 350. |
Notes: