"Traffic Barriers" is a PowerPoint for primary and secondary students that describes what traffic barriers are and how they are used. This lesson can also be paired with a "Design Your Own 3D Transportation Model" activity.
Choosing the Right CBSE School A Comprehensive Guide for Parents
Traffic Barriers
1.
2. Traffic barriers keep vehicles within their
roadway and prevent vehicles from
colliding with dangerous obstacles
3. Traffic barriers installed
at the road side also
prevent out of control
vehicles from traversing
steep (non-recoverable)
slopes
4. Bridge ends
Near steep slopes from
roadway limits
At drainage crossings or
culverts where steep or
vertical drops are present
Near large signs/
illumination poles or other
roadside elements which
may pose hazards
5. used to protect traffic from
roadside obstacles or
hazards, such as:
• slopes steep enough to cause
rollover crashes
• fixed objects like bridge piers
• bodies of water
used as wide medians, to
prevent vehicles from
colliding with hazards
within the median
6. used to prevent
vehicles from crossing
over a median and
striking an oncoming
vehicle in a head-on
crash
Unlike roadside
barriers, they must be
designed to be struck
from either side
7. designed to restrain vehicles from
crashing off the side of a bridge and
falling onto the roadway, river or
railroad below
usually higher than roadside
barriers, to prevent trucks, buses,
pedestrians and cyclists from
vaulting or rolling over the barrier
and falling over the side of the
structure
Bridge rails are usually multi-rail
tubular steel barriers or reinforced
concrete parapets and barriers
8. used to protect traffic from
hazards in work zones
distinguishing feature is they
can be relocated as
conditions change in the
road works
advantages can be that they
are assembled without
heavy lifting equipment
9. The “Steel and Foam Energy Reduction
(SAFER) barrier” – sometimes called a “soft
wall” – is a technology found primarily on oval
automobile race tracks and intended to make
racing accidents safer
It was designed by a team of engineers led by
Dean Sicking at the Midwest Roadside Safety
Facility at the University of Nebraska-Lincoln.
10. Initially installed at the Indianapolis Motor Speedway in
2002, in time for the Indianapolis 500
first "tested" by Robby McGehee in a crash during the
first day of practice
The theory behind the design is that the barrier absorbs
a portion of the kinetic energy released when a race car
makes contact with the wall
• This energy is dissipated along a longer portion of the wall,
instead of propelling the car back into traffic on the track
The SAFER barrier also lessens damage to the car
itself, thereby reducing repair costs.