在AAR的主持和推动下,80年代末,北美铁路成功地开发了采用无线电波反射方式的车辆自动识别系统(AEI),即自动抄车号或自动读取车号的系统。AARAEI的标准与ISO的国际标准是兼容的。 据报道,到1995年11月,已经在127.5万辆货车、19200台机车、8700列车尾部设备安装了应答器。1995年底,读取器可以安装1572处。 Under the auspices of the AAR, in the late 1980s, North American Railway successfully developed an automatic vehicle identification system (AEI) that uses radio-wave reflection, a system that automatically retrieves or automatically reads license plate numbers. AARAEI’s standards and ISO’s international standards are compatible. It is reported that by November 1995, transponders had been installed on 1,257,500 trucks, 19,200 locomotives and 8700 train tail equipment. At the end of 1995, readers could be installed at 1572 locations.