Hooray For Bollards
Emergency vehicle siren lowers security devices
- By David Dickinson
- Mar 01, 2012
To block off residential areas from nighttime
traffic on Sunset Boulevard and
mitigate traffic from the Sunset Millenium
Shopping Center, the city of West
Hollywood, Calif., is employing the same
type of anti-terrorism bollards used by the government
to stop car bombers at embassies around the world.
They also are used at many corporate headquarters
and high-value cargo depots. However, in West Hollywood,
they’re out in the streets to keep busy nighttimearea
traffic from entering residential streets.
Delta TT210 vertical lift bollards will destroy the
front suspension system, steering linkage, engine
crank case and portions of the drive train of any 7.5-
ton non-armored or non-tracked vehicle hitting them
at 62 mph. They will also stop a 15-ton vehicle traveling
at 44 mph.
“The bollards were installed on Hammond Avenue
almost 20 years ago,” said Sharon Perlstein, West
Hollywood city engineer, Department of Transportation
and Public Works. “They have survived all this
time with little cost for restoration or repair. Over the
years, the bollards have been hit by several cars going
30 to 40 miles per hour with no effect on their ability
According to Perlstein, the city needed a street
closure barricade to block off a residential area
from nighttime traffic resulting from Sunset Boulevard
nightclubs and restaurants. Originally, Perlstein
and the others involved in the project heard of this
solution through their parking manager who was researching
Delta Scientific for parking booths. They
visited the Delta facilities and were given a demonstration
of how the bollards work.
During the day, bollard systems are recessed and
remain in the down position to let cars through. During
the evening, they raise to keep cars off residential
streets. Parking enforcement raises and lowers the
bollards with a key operation.
A second system was installed to mitigate traffic
from the Sunset Millenium area, which includes a
shopping center, hotel and retail section, and retail
and office area. In order to build the project, the developers
were required to keep shoppers away from
West Hollywood’s residential areas and needed to
block off a street. To do so, the developer, in concert
with the city, decided to install bollards on West Hollywood’s
Alta Loma Road, turning the street into a
However, Perlstein said the West Hollywood
Emergency Services Department was concerned because
Alta Loma has historically been used by the
city’s and surrounding cities’ emergency vehicles.
Emergency service officials requested that the bollards
be able to be lowered for emergency traffic. In
response, Delta created a system in which the sound
of the sirens from the emergency vehicles lowers the
bollards. Parking enforcement then re-raises the devices
through a key operation.
LAPD Deploys Mobile Barriers
Just a couple bus stops away from West Hollywood,
the Los Angeles Police Department deploys totally
self-contained MP5000 high-security mobile barricade
systems to protect its historic downtown Parker
Center headquarters during times of heightened
homeland security threat levels. The MP5000s can be
towed into position to control vehicle access within 15
minutes and can be used for special events unique to
Los Angeles, such as Hollywood awards ceremonies.
When the homeland security threat alert rises,
LAPD’s secure perimeter expands several blocks. The
MP5000s can easily be mobilized in response to a
threat-level change, creating a safe zone at the outer
areas surrounding the Parker Center headquarters.
Built at the request of government force protection
specialists for initial fast deployment use in Iraq and
elsewhere, the system does not require excavation or
sub-surface preparation. Once positioned, the mobile
barricade unpacks itself by using hydraulics to raise
and lower itself off its wheels. A DC-powered pump
then raises or lowers the barrier. The mobile deployable
vehicle crash barrier carries a K4/L1 rating and
stops a 7.5-ton vehicle traveling 30 mph.
LAPD also taps the MP5000s to provide extra security
at glamorous affairs such as the Academy Awards,
major sporting events, high-profile trials or in the potential
event of riots or natural disasters
such as earthquakes.
This article originally appeared in the March 2012 issue of Security Today.
About the Author
David Dickinson is
senior vice president
of Delta Scientific.