00000nam##2200000za#4500 9.686694 CaOODSP 20210624230642 cr ||||||||||| 150407|2003||||xxc|||||o f|0| 0 eng|d CaOODSP eng n-cn--- T48-39/2003E-PDF Canada. Transport Canada. Transportation Development Centre. LED technology for improved conspicuity of signal lights at highway-railway grade crossings / [electronic resource] by David Green. Montreal - Quebec : Transport Canada. 2003. [169]p. in various pagings. figs., references, tables "Prepared for Transportation Development Centre Transport Canada by Carmanah Technologies Inc., February 2003".--Cover. 03-39 2003-09-26 Green, David Utilisation de la technologie DEL pour améliorer la perceptibilité des feux de signalisation aux passages à niveau / (CaOODSP)9.631157 http://publications.gc.ca PDF 10,684 KB https://publications.gc.ca/collections/Collection/T48-39-2003E.pdf TP 14043E