Patent for signaling devices designed for use along railroads and grade crossings and meant to be automatically operated upon the approach of a train by giving a visible or audible signal at the crossing which will warn travelers of the approach of the train and calcuated to avoid the occurrence of accidents. The signal device includes a track associated train operated circuit closing device for energizing a bell, flashing light, or signal arm or any other equivalence or suitable signal device located at the crossing
The main purpose of this paper is to reduce the accidents at the level crossings. Railway is a vast ...
Patent for a new and improved railroad switch. This design "has for its object to provide a simple, ...
PDFTech ReportDOT-TSC-FRA-71-03PB-201 624Computer programmingCost effectivenessGrade crossing protec...
Patent for a "device for indicating at railroad crossings and other points, the approach or departur...
Patent for an improved railway signal meant to be used at crossings. It consists of a rotary signal ...
Patent for a railroad crossing that "consists in certain devices organized in a manner to secure aut...
Patent for an improved signal actuating mechanisms for railways. When the train cars reach an operat...
Patent for a new and improved railroad signal. This design, "[w]hen the wheels of a passing train co...
Patent for an improved railway switch that "may be operated by a passing car or train, and one which...
Patent for an automatic repeating railroad-signal designed to be used with semaphore and other train...
PDFTech ReportDOT-TSC-FRA-75-07FRA-OR&D-75-80Grade crossing protection systemsMicrowave communicatio...
462090258Final Report October 1991 - May 1995PDFTech ReportDOT-VNTSC-FRA-95-10DOT/FRA/ORD-95-13R5031...
Patent for invention that applies the use of electricity to suitable electrically-operated devices t...
An intelligent intersection control system features an internal controller that receives digital mes...
PDFTech ReportDOT-VNTSC-FRA-95-10DOT/FRA/ORD-95-13R5031/RR597LocomotivesNavigation lightsPaintRailro...
The main purpose of this paper is to reduce the accidents at the level crossings. Railway is a vast ...
Patent for a new and improved railroad switch. This design "has for its object to provide a simple, ...
PDFTech ReportDOT-TSC-FRA-71-03PB-201 624Computer programmingCost effectivenessGrade crossing protec...
Patent for a "device for indicating at railroad crossings and other points, the approach or departur...
Patent for an improved railway signal meant to be used at crossings. It consists of a rotary signal ...
Patent for a railroad crossing that "consists in certain devices organized in a manner to secure aut...
Patent for an improved signal actuating mechanisms for railways. When the train cars reach an operat...
Patent for a new and improved railroad signal. This design, "[w]hen the wheels of a passing train co...
Patent for an improved railway switch that "may be operated by a passing car or train, and one which...
Patent for an automatic repeating railroad-signal designed to be used with semaphore and other train...
PDFTech ReportDOT-TSC-FRA-75-07FRA-OR&D-75-80Grade crossing protection systemsMicrowave communicatio...
462090258Final Report October 1991 - May 1995PDFTech ReportDOT-VNTSC-FRA-95-10DOT/FRA/ORD-95-13R5031...
Patent for invention that applies the use of electricity to suitable electrically-operated devices t...
An intelligent intersection control system features an internal controller that receives digital mes...
PDFTech ReportDOT-VNTSC-FRA-95-10DOT/FRA/ORD-95-13R5031/RR597LocomotivesNavigation lightsPaintRailro...
The main purpose of this paper is to reduce the accidents at the level crossings. Railway is a vast ...
Patent for a new and improved railroad switch. This design "has for its object to provide a simple, ...
PDFTech ReportDOT-TSC-FRA-71-03PB-201 624Computer programmingCost effectivenessGrade crossing protec...