A railroad crossing control system (100) includes a constant warning time device (40) with a control unit (50) configured to produce multiple signals, and a wheel sensing system (120) comprising at least one sensor (122) connected to a rail (20a, 20b) of a railroad track (20) at a predetermined position (P), wherein the wheel sensing system (120) detects a presence of railroad vehicle travelling on the railroad track (20) such that the at least one sensor (122) detects wheels of the railroad vehicle using electromagnetic fields, wherein the wheel sensing system (120) provides speed values of the railroad vehicle to the constant warning time device (40), and wherein the constant warning time device (40) produces a constant warning time signal for controlling a railroad crossing warning device in response to receiving the speed values of the wheel sensing system (120).

A railroad crossing control system (100) includes a constant warning time device (40) with a control unit (50) configured to produce multiple signals, and a wheel sensing system (120) comprising at least one sensor (122) connected to a rail (20a, 20b) of a railroad track (20) at a predetermined position (P), wherein the wheel sensing system (120) detects a presence of railroad vehicle travelling on the railroad track (20) such that the at least one sensor (122) detects wheels of the railroad vehicle using electromagnetic fields, wherein the wheel sensing system (120) provides speed values of the railroad vehicle to the constant warning time device (40), and wherein the constant warning time device (40) produces a constant warning time signal for controlling a railroad crossing warning device in response to receiving the speed values of the wheel sensing system (120).

A dynamic load system includes a first electric machine simulating a load, a second electric machine, a coupling device for mechanically coupling the first electric machine to the second electric machine, a control unit with a processor and connected to the first electric machine and the second electric machine, wherein the control unit is configured to control the first electric machine and the second electric machine, wherein a reference value of the second electric machine is utilized to achieve a specific performance of the first electric machine.

A dynamic load system includes a first electric machine simulating a load, a second electric machine, a coupling device for mechanically coupling the first electric machine to the second electric machine, a control unit with a processor and connected to the first electric machine and the second electric machine, wherein the control unit is configured to control the first electric machine and the second electric machine, wherein a reference value of the second electric machine is utilized to achieve a specific performance of the first electric machine.

A system (e.g., a target activation system for a transportation network) includes one or more processors configured to be operably coupled onboard a vehicle system having one or more vehicles. The processor(s) are further configured to determine an estimated time of arrival of the vehicle system at a first target location associated with a forward route of the vehicle system, determine a gap time between when the vehicle system leaves the first target location and is estimated to arrive at a second target location, and, based at least in part on the estimated time of arrival, a dwell time of the vehicle system at the first target location, the gap time, an allowable speed or acceleration of the vehicle system, and a designated warning time, generate an activation message configured to control at least one device associated with the second target location.

A simulated track inductor mount including a base configured to be fixed against a supporting surface and an inductor hub attached to and extending from the base. The inductor hub includes one or more surfaces defining a margin and being configured to engage with an inner surface of the simulated track inductor, and the one or more surfaces are fixed to a camming tab configured to flex to removably seat the simulated track inductor on the inductor hub.

A method for operating a railroad crossing includes using an axle counter to capture measurement data for rail vehicles approaching the railroad crossing during passage of the rail vehicle. The velocity and the acceleration of the rail vehicle are calculated from the measurement data as properties of the rail vehicle by arithmetic measures. A time of closure is specified for triggering a closure of the railroad crossing as a function of the calculated properties of the rail vehicle. The velocity and the acceleration are calculated from the measurement data of the axle counter. The time of closure of the railroad crossing is specified with reference to the calculated velocity and the calculated acceleration as the rail vehicle is leaving the axle counter. An apparatus for operating a railroad crossing, a computer program product and a delivery apparatus for the computer program product are also provided.

Examples described herein provide a method for direction control of a motor of a gate crossing mechanism. The method includes providing, by a field-effect transistor (FET) driver, a first voltage via a high output to an open contact of a first relay and to a closed contact of a second relay. The first voltage causes a shaft of the motor to turn in a first direction. The method further includes providing, by the FET driver, a second voltage via a low output to a closed contact of the first relay and to an open contact of the second relay. The second voltage causes the shaft of the motor to turn in a second direction opposite the first direction.

A crossing gate mechanism includes a gate mechanism enclosure, a gate arm shaft, and a quick-replacement moon gear assembly. The gate mechanism enclosure defines an interior space. The gate arm shaft extends into the gate mechanism enclosure and is rotatable relative thereto. The quick-replacement moon gear assembly is coupled to the gate arm shaft for rotation therewith and is positioned within the interior space. The quick-replacement moon gear assembly includes a gear hub fixed to the gate arm shaft for rotational movement therewith, and a quick-replacement moon gear releasably coupled to the gear hub. The quick-replacement moon gear is removeable from the interior space while the gear hub remains fixed to the gate arm shaft.

A crossing gate mechanism includes a swingable gate arm, a rotatable gate arm shaft fixed to the gate arm, and an electronic sensor assembly coupled to the gate arm shaft. Rotation of the gate arm shaft corresponds with swinging of the gate arm. The electronic sensor assembly senses an angular position of the gate arm shaft and transmits a position signal corresponding thereto. The electronic sensor assembly includes a driving element that is attached to the gate arm shaft to rotate therewith. the electronic sensor assembly also includes a driven element that is driven by the driving element such that rotation of the gate arm shaft causes the driven element to rotate. The electronic sensor assembly is configured to generate the position signal based on a position of the gate arm shaft.