ICE BUNKER (refrigerator car)
The compartment in which the ice is placed.
ICING CHARGE
A charge made for icing perishable freight.
ICV
Vent at forward end of door. Derived from
individually controlled ventilation.
ID Entry Type
Setup parameter to select display data entry format in ProDriver. ( Detroit )
IDENTIFICATION
Designation of a road location, a vehicle, a
person, or a traffic accident in such a manner as to positively distinguish it
from all others of the same description.
Identification is often accomplished by a unique number such as a
vehicle identification number, registration number, or driver's license number.
IDIOT LIGHTS
Warning lights on an instrument panel which glow
red when something in the engine goes wrong; e.g., low oil pressure.
Idle Fuel
The amount of fuel used while the engine was in Idle Mode. ( Detroit )
Idle Method
There are three methods of detecting that the engine is in idle: ( Detroit )
1. VSS Idle, where the engine is running but vehicle speed is less than a threshold (default value is 1.5 mph).
2. Idle Governor Idle, where the Idle Governor is in use.
3. RPM/Load Idle, where the engine is operating below an RPM threshold and below a percent engine load threshold.
Idle Mode
Engine operation which meets the conditions of the idle method chosen in Vehicle Parameters setup. ( Detroit )
Idle Percent
The percentage of the total Trip Time the engine was in Idle Mode. ( Detroit )
IDLE TIME
Trip Time spent in Idle Mode. ( Detroit )
Idle Time Limit
Setup parameter for the excessive idle screen timer in ProDriver ( Detroit )
IDLER ARM
The idler arm is a rod, connected at one end to the
teas link and at the other end to a pivot point on the chassis. The idler arm supports the end of the drag
link opposite the pitman arm, and forms an "image" of the pitman
arm. The idler arm, drag link, tie
rods, and steering knuckles comprise the steering linkage.
IDLER CAR
An unloaded flat car used to protect overhanging
freight.
IGNITION INTERLOCK RELAY
A normally closed relay which when energized by the
sequencing module interrupts the starter circuit.
IMPACT
Impact is the meeting and the action of two bodies
in a collision that changes the velocity of either or both When the two bodies first make contact at a
single point, deformation will take place at that point and will progressively
spread until the two bodies eventually make contact over the maximum area
IMPACT REGISTER
An appliance placed in a car with a shipment which
is both a time clock and a measuring device to record the amount of shock the
car received enroute.
IMPENDING SKID MARKS
Left by a braked wheel rotating slower than the
forward motion of the vehicle
IMPORT
To receive goods from a foreign country.
IMPRESSION
An imprint of a tire or shoe pattern in soft
material; the tire pattern at the bottom of a rut.
IMPRINT
A mark on the road or other surface made without
sliding by a rolling tire or a person's foot.
An imprint usually shows the pattern of the tire tread or shoe that made
it.
IMPULSE
A vector quantity whose direction is that of the force (f) in the
equation f*t=s, where t is the time the impulse acts, and is
the displacement. Impulse is recorded
as pound seconds (lb*s). An impulse
causes a change in momentum. This change is equal to the impulse in both
magnitude and direction. f*t = m(vf -
vi)
IN BOUND
Merchandise on which a duty or import tax is still
due (unpaid) is referred to as an "in bound". Bonding guarantees that the duty will be
paid to the government.
IN THE CLEAR
When a train has passed over switch and frog so far
that another can pass it without damage, it is in the clear.
IN THE HOLE
(slang) A car or train in a siding.
INADVERTENT ACTUATION
Air cushion deployment in a non-accident condition,
caused by a malfunction.
Incident Record
Data Last 120 seconds of data for; Time: Driver Incident 1:59 to 0:00, Hard Braking Incident 1:29 to +0:30, Last Stop Record 1:44 to +0: 15 ( Detroit )
Speed Vehicle speed in .5 mph resolution at the time marker
RPM Engine speed at the of time marker.
Brake Brake status at time of the marker.
Clutch Clutch status at the time of the marker.
Percent Load Percent load at time of the marker.
Percent Throttle Percent throttle at time of the marker
Cruise Mode Cruise status at the time of the marker.
Alert Alerts active at time of the marker.
INCLINATION ANGLE
The angle between the Z' axis and the wheel plane.
INCOMPLETE COLLISION
An incomplete collision is a collision between two
objects in which there is no cessation of motion between areas of the colliding
objects that are in contact with one another.
INDEPENDENT BRAKE VALVE (air brake)
A brake valve for operating the locomotive brakes
independently of the train brakes.
INDICATION
The information conveyed by the aspect of a signal.
INDUCED DAMAGE
Damage to a vehicle other than contact damage. Often indicated by crumpling, distortion,
bending, and breaking. Induced damage
includes damage done by another part of the same vehicle. Compare with contact
damage.
INDUSTRIAL CARRIER; INDUSTRIAL LINE; OR INDUSTRIAL
ROAD
A short railroad owned or controlled by one or more
of the principal industries served by it.
INERTIA
The tendency of an object at rest to remain at
rest, and of an object in motion to
continue in motion without a change in vector velocity.
INFLAMMABLE LIQUIDS
Liquids that give off vapors which become
combustible at a certain temperature.
INFORMANT
Any person who communicates information; not an
informer.
INFORMATION
Any knowledge received concerning a particular
matter, such as a traffic accident, from any source, regardless of the
reliability of the knowledge.
INITIAL CARRIER
The transportation line that picks up a shipment
from the shipper; the first carrier.
INITIAL CONTACT
Initial contact is that point in the collision
sequence where two objects in collision first come into contact with one
another Collision forces at this point
are still zero.
INITIAL POINT
The location at which a shipment originates.
INITIAL VELOCITY
(vi): The velocity at the beginning of an event or
sequence of events.
INJECTION MOLDED
Process used to produce plastic interior and
exterior automotive parts. Parts are formed by injecting molten plastic into a
mold.
INJECTOR
A device found in a diesel engine that changes
liquid fuel oil into a mist or spray and meters it to each cylinder.
INJECTOR PUMP
A pump used to deliver fuel to the injectors under
very high pressure.
INJURED PERSON
Person sustaining any type of injury as a result of
an accident, including injuries from non - impact forces.
INJURY CRITERIA
Specified maximum forces and/or accelerations
measured on anthropomorphic test devices during specific impacts. Refer to
chest load, femur load, head injury criteria and severity index.
INJURY RATE
The ratio of the frequency of personal injuries or
injury accidents to the frequency of some exposure measure such as vehicle
miles, passenger miles, or all accidents.
INLAND CARRIER
A transportation line which hauls export or import
traffic between ports and inland points.
INNER CUSHION
A small, cylindrical, impermeable air cushion which
prevents occupant sub-marining.
INSERT
Reinforcing steel or aluminum channel section
usually pressed within main frame rails.
INSPECTION
(vehicle) Checking over the vehicle parts and
systems for problems and malfunctions and to see that everything is in order
and in place. Pre-trip inspection is a
thorough inspection done before the trip.
Enroute inspections are made periodically during the trip. Post-trip inspections are done after the
trip, so that problems and malfunctions can be reported to maintenance
personnel.
INSTANTANEOUS VELOCITY
(v): The
average velocity for a time interval
that approaches zero (0).
INSTRUMENT PANEL
The portion of the interior extending from door to
door directly in front of the driver, and containing primary gauges and
controls for operating the vehicle.
INSTRUMENTS
Devices for indicating or measuring conditions,
performance, position, direction, etc.
INSULATED BODY
Truck or trailer body designed for transportation
of commodities at controlled temperatures.
It may be equipped for refrigeration, heating or both.
INSULATED RAIL JOINT
A rail joint which arrest the flow of electric
current from rail to rail as at the end of a track circuit, by means of
nonconductors separating rail ends and other metal parts.
INSURANCE
A contract binding a company to indemnify an
insured party against a specified loss or damage. Motor carriers purchase many types of insurance, including cargo
insurance, property damage insurance, public liability insurance, and workmen's
compensation insurance.
INTAKE
An opening in the surface to allow air to flow in,
usually to cool brakes, engine, or occupants for passenger comfort.
INTAKE MANIFOLD
That part of the fuel system that carries the air
or air fuel mixture to the cylinders.
INTAKE PORTS
Provide the connecting passages from the outside of
the cylinder heads to the inside head openings (the velvet).
INTAKE STROKE
Phase of the four-stroke cycle when fuel and air
enter the cylinder.
INTAKE VALVES
Valves used in an engine to admit air into the
combustion chambers of the cylinders.
INTEGRAL
Combined to act as a single unit.
INTEGRAL BODY
A body construction that integrates the frame into
the basic body structure such that chassis parts are attached directly to the
body metal.
INTEGRATED BRAKING
A system which uses a portion of the front brake
capability when the rear brake pedal is pushed.
INTEGRATED CIRCUIT
An electronic circuit with all of its components
formed on a single miniature silicon
chip.
INTEGRATION
The blending of separate units into a unified or
functioning whole.
INTENDED COURSE
The path that would have been followed by a traffic
unit as a normal part of its trip had the situation hazard not led to evasive
tactics or accident.
Intensity
ProDriver setup parameter to set the display brightness level ( Detroit )
INTER
Between.
INTERAXLE DIFFERENTIAL
Gear device dividing power equally between axles
and compensating for unequal tire diameters.
INTERAXLE DIFFERENTIAL LOCK
See differential lock.
INTERCEPT
The point at which two straight lines, such as the
extension of two roadway edges, cross each other; the apex of the angle formed
by two straight lines which cross. Also
called point of intersection.
INTERCHANGE
A system of interconnecting roadways in conjunction
with one or more grade separations, providing for the movement of traffic
between two or more roadways on different levels. Compare with intersections and junction.
INTERCHANGE POINT
A station at which freight in the course of
transportation is delivered by one transportation line to another.
INTERCHANGE TRACK
A track on which freight is delivered by one
railroad to another.
INTERCITY TRUCKING
Trucking operations which carry freight beyond the
local areas and commercial zones.
INTERLINE FREIGHT
Freight moving from point of origin to destination
over the lines of two or more transportation companies.
INTERLINE WAYBILL
A waybill covering the movement of freight over two
or more transportation lines.
INTERLOCKING
An arrangement of signals and switches
"interlocked" in such a way that their movements must succeed each
other in a predetermined order so that a clear indication cannot be given
simultaneously on conflicting routs.
They are found at a crossing of two railroads, a drawbridge, a junction,
or entering or leaving a terminal or yard.
INTERLOCKING LIMITS
The tracks between the extreme opposing home
signals of an interlocking direction of motion and the portion of the stroke of
the piston during which steam is admitted to the cylinder.
INTERMEDIATE CARRIER
A carrier over which a shipment moves but on which
neither the point of origin nor destination is located.
INTERMEDIATE POINT
A location between two other points specifically
named.
INTERMODAL TRANSPORTATION
Transportation movement involving more than one
mode, e.g., rail-motor, motor-air, or rail-water.
INTERNAL BIOMECHANICS
The response of the interior of a biological system
to externally applied forces. For
example, the amount of rib deflection resulting from impact.
INTERNAL EXPANDING BRAKE
A type of brake designed with the brake shoes on
the inside of the braking drum to expand against the inner surface of the drum.
INTERROGATION
Formally examining a suspect by questioning.
INTERSECT
The point at which two straight lines, such as the
extensions of two roadway edges, cross; the apex of the angle formed by two
straight lines which cross. Also called
point of intersection.
INTERSECTION
The area embraced within the prolongation or
connection of the lateral curb lines, or if none, then the lateral boundary
lines of the roadway of two highways which join one another at, or
approximately at, right angles, or the area within which vehicles traveling
upon different highways join at any other angle may come in conflict. Where a highway includes two roadways thirty
feet or more apart, then every crossing of each roadway of such divided highway
shall be regarded as a separate intersection.
In the event such intersecting highway also includes two roadways thirty
feet or more apart, then every crossing of two roadways of such highway shall
be regarded as a separate intersection.
Compare with junction.
INTERSTATE COMMERCE ACT
An act of Congress regulating the practices, rates
and rules of transportation lines engaged in handling interstate traffic.
INTERSTATE TRAFFIC
Traffic moving from a point in one state to a point
in another state or between points in the same state, but passing within or
through another state enroute.
INTRA
Within
INTRA PLANT SWITCHING
The moving of cars from one track to another within
a plant.
INTRUSION
The extent to which elements of the vehicle
structure intrude into the passenger compartment space as a result of impact
forces. The reduction in an interior
dimension, due to door, footwell, or bulkhead intrusion.
ISIR
(Initial Sample Inspection Report) A specified
format for submitting initial samples to the OOEM for approval. Elements of an
ISIR include: Initial Sample Warrant,
sample parts, checked print, lab test results to OEM specifications,
certification data, gauge studies, process capability results, process flow
diagrams, control plans and FMEAs. (Generic) - OEM Specific Initial Sample Names:
Chrysler Corporation: ISIR (Initial
Sample Inspection Report); Ford Motor Company:
ISR (Initial Sample Report;
General Motors Corporation: GP-e
(See GP-3)
ISLR
(Initial Sample Laboratory Report) The component of
the initial sample submission that reports performance of product of OEM
material and engineering standards. (Generic)
ISM
Inside of Metal
ISO
(International Standards Organization) is an
internationally recognized organization that has established international
standards for quality assurance systems. ISO 9002 applies to
production/manufacturing locations. Plants must be approved and registered to
enable suppliers to do business in the newly formed European Economic
Community.
ISR
(Initial Sample Report, Ford) See definition of
ISIR.
ITERATIVE METHOD
Any process of successive approximation used in
such problems as numerical solution of algebraic equations
References
Detroit Diesel
Caterpillar User's Manual