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[quote user="garr"] <blockquote> If this truck was in fact the first in a convoy, which implies closely following trucks, the protection proved adequate enough for the following two. Jay </blockquote> <div style="clear:both;"></div> [/quote] Yes, but just because some drivers can avoid a collision without an extension of the crossing warning, that does not necessaily mean that the extended warning is not needed.  If that were the case, we would not need signals and gates at grade crossings.  Assuming good sight distance, a simple crossbuck should suffice.
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