GeoDataSource Structural Database Gold Edition contains city names, feature type classifications, country names in FIPS and ISO, regions, sub-regions, state, county, longitude and latitude in degree and decimal, UTM coordinate grid and JOG reference.
GeoDataSource World Structural Database Basic Edition contains structural feature names in original language and English, feature type classifications, country names in FIPS and ISO, regions and sub-regions. Database available in text format.
A simulation of a NYC Transit Authority train traveling by automatic signals with working stop arms. Working circuit drawings show how the signal system relays function while the train passes over track circuits.