Early Federal highway (FHWA) Tests on older style LEDline® Safety Guidance product
with Only 6 x LEDs.
FHWA Pressure Test:
Placed flat on a steel bed, the LEDline® safety guidance lighting, successfully endured
some +89,000 lbs. of direct loading pressure without fracturing or damage.
FHWA Strength Test: Suspended across two steel supports, 50mm (2") high and placed some 55.9cm (22") apart, the LEDline® safety guidance lamp, without its Mounting Plate, was bridged across these supports.
Some 1050 lbs. of directed pressure was concentrated onto the middle of the unit. This bent the LEDline® guidance lamp, some 76m (3") out of true. (Note: When LEDline® is installed into its
in-pavement groove, the LEDline® safety guidance inside its Mounting Plate are always fully supported by the glue in the groove.)
Despite this unprecedented test of the LEDline® guidance lamp being bent 75mm (3") out of true, this older style LEDline® unit continued to function normally and as the picture below demonstrates,
the clear plastic matrix was undamaged. (See below).
The Pictures Below Show the Results of Two of the FHWA Tests;The Left Picture: The picture shows the FHWA Strength Testbed, with the LEDline® lamp, (without its Mounting Plate), bridged across the two steel supports. To test the strength of the LEDline® safety guidance lamp, the machine is about to be used to put the 1050lbs. of direct concentrated loading onto the lamp's middle, which will cause it to bend some 75mm (3").
The Right Picture: This picture is of the FHWA Pressure Test when the LEDline® safety guidance unit is flat on the steel plate and had some 89,000lbs. of direct loading put on to it. The LEDline® guidance unit survived without damage.
Please Contact HIL-Tech for the complete report.
FHWA Strength Test: The above picture shows how the LEDline® guidance was suspended between two steel supports and some 1050lbs. of directed force was concentrated onto the middle of the unsupported LEDline® guidance unit, bending it 75mm (3”) out of true.
FHWA Pressure Test: Placed flat on a steel bed, the LEDline® guidance unit successfully endured +89,000 lbs. of direct loading pressure without fracturing. (See the pictures below.)
Bent and Pressure Tested, Without Its Mounting Plate,
Below is The lit LEDline® Guidance Unit After Being Bent Some 75mm (3").
There are no cracks or marks and the unit still lights!
as a comparison;
today's LEDline® safety guidance unit, on
June 2021, was again unusually tested.
"it's still tough!!
Today's LEDline® Safety Guidance Units Are Still Tough, June 2021 Roller Test!
Here, a 10 Ton (20,000 lbs.) Roller, Drives Over A Surface Mounted Lit LEDline® Safety Guidance Unit,
It Stays Lit and Passes the Roller Test!
(See the video on the LEDline® Safety Guidance 10 Ton Roller Test Page)
FHWA Temperature Test: The LEDline® guidance unit was cooled down to -20°C (-4°F) for 8 hours then raised to +65°C (149°) for 8 hours. The temperatures had no effect on the light output.
(Note: HIL-Tech has tested LEDline® Safety Guidance units to the FAA standard Airfield Lighting Test Requirements;
-55C (-67°F) to +65°C (149°) again, there was no effect on light output).
FHWA Waterproof Test:
The LEDline® guidance unit was immersed in 1"(24.5mm) water. It easily passed.
(Note: For use as lighting for submarine escape chambers, early LEDline® units were successfully tested down to
300m (approx 1000ft.) seawater depths by the Canadian Navy, they continued to function normally.
LEDline® was then, used as lighting in the pressurization chamber, the LEDline® unit there was repeatedlypressurized and de-pressurized at this 300m (1000ft.) seawater depth thousands and thousands of times, again, all without any effect).
(Note: HIL-Tech stopped enquiring after some 5000 repeat cycle pressurizations had been reached.)
Early LEDline® Unit Impact tests
OTC (offshore technology Conference)
Video of early LEDline® safety guidance unit Hammer Impact Test at the OTC trade Show