Lindsay Transportation Solutions Sales and Services, Inc
(888) 800-3691 [U.S. toll free] or +1 (707) 374-6800
3
X-TENSION
®
SYSTEM
X-Tension Introduction
Introduction
The X-Tension Guardrail End Terminal has been designed and tested to meet the evaluation
criteria of NCHRP 350 Test Level 3.
The system has been tested to the guidelines in NCHRP 350 for a non-gating, re-directive guard-
rail end treatment. When correctly installed and maintained, the system is capable of stopping,
containing, or re-directing an errant vehicle in a safe manner under NCHRP 350 impact condi-
tions.
The X-Tension Guardrail End Terminal is the world’s first fully re-directive, non-gating guardrail
terminal end. The unique X-Tension technology is a tension based solution rather than compres-
sion based. It offers exceptional vehicle control and energy absorbing capabilities in head on
impacts, where the energy is absorbed with resistance at the impact head rather than being trans-
ferred down the rail as occurs with other systems. Even head on, high angle (15
o
during testing)
impacts on the nose resulted in the vehicle being redirected and controlled.
System Overview
The X-Tension Guardrail End Terminal is designed and constructed to provide acceptable struc-
tural adequacy, minimal occupant risk and safe trajectory as set forth in NCHRP 350 for guard-
rail terminal ends.
When impacted head on with an 820 – 2000kg (1800 – 4400lb) vehicle at speeds of up to 100kph
(62 mph), the impacting vehicle is brought to a controlled stop or allowed to penetrate to the back
side, depending on the impact conditions.
Before Installation
Placement and use of the X-Tension Guardrail End Terminal should be done in accordance with
the guidelines and recommendations set forth in the “AASHTO Roadside Design Guide”, FHWA
memoranda and other state and local standards.
Depending on the application and circumstances at the site, installation and assembly of a Test
Level 3 system should take a two person crew less than two hours.
The X-Tension Guardrail End Terminal is a highly engineered safety device made up of a rela-
tively small number of parts. Before starting installation ensure that one is familiar with the make
up of the system.
