Proper lamp bulbs must be used in all electric signal units,
and the voltage at the lamp terminals shall be maintained 85-95%
at what percent of rated lamp voltage? (2.106)
At highway grade crossings where LED's are used as a
light source, the light unit shall be considered defective
50%
when more than what percentage of the LED's are no
longer functioning?
Indicates to the motorist it is safe to proceed across the
Activation Failure is defined as what?
tracks when it is not safe to do so.
Indicates to the motorist that it is not safe to proceed
False Activation is defined as what?
across the tracks when it is safe to do so
Test #8 (Grounds Test): At what interval is the test pre-
90 days
formed at wayside signal locations?
According to test #8, at what interval is the test preformed
30 days
at Crossing Warning System locations?
Upon arrival at a false activation, the crossing is working
Check approaches for rail continuity, broken track connec-
as intended with low Rx. Before changing the adjustment
tions, etc.
on the unit, what must you do? (2.810)
According to test #8, when a current reading is required
you must receive permission from the control station be- True
fore beginning the test (page 57)
Test #30 (Storage Battery Test and Inspections): At what
interval are batteries tested and inspected at highway Monthly
crossing and defect detector locations? (Page 98)
According to test #30, at what interval are batteries tested
90 days
at wayside locations? (page98)
According to test #30, at what interval are capacity tests
Annually
performed on all batteries? (page 98)
, Per test #30, if you replace a cell within a battery bank,
same ampere hour rating and same manufacturer
which of the following must be true? (page 99)
At a highway crossing location, battery bank voltage must
be recorded on the battery cards at what interval? (page Monthly
98)
At a highway crossing location, individual cell voltage must
be recorded on the battery cards at what interval? (Page annually
101)
The bank voltage that is recorded on the battery card
should be that read with the AC power in what condition? AC Power connected
(page 100)
Test #31 (Highway Rail Grade Crossing Warning System_:
Gate arms should start downward only after a minimum
3 seconds
of how many seconds of warning lamp operation? (page
103)
Once gate arms start their descent, they should reach the
10-15 seconds
full horizontal position in what time frame? (page 103)
Gate arms shall be in the full horizontal position for a
minimum of how many seconds before the arrival of any 5 seconds
train at the crossing? (page 109)
Gate arms should ascend (raise) from the horizontal po-
sition to the normal vertical position within how many 12 seconds
seconds? (page 109)
With the crossing on stand-by battery, how many times
3 times
are the gates required to be operated? (page 104)
What is the timeframe to complete the gate operations
2-5 minutes
test mentioned in question 20? (page 104)
2/5