Harbor Traffic is its own mod....its not in RUB 1.45....just download Harbor Traffic 1.47 stand alone version it should be on Terrappin's site but, his site is down again...
You can try to find it here:
http://www.subsim.com/phpBB/viewtopic.php?t=30638
here is 1.45 stand alone version on this site:
http://sh3mods.koolhost.com/downloads.html
Most people use the HT 1.47 version for RUB/IUB so you might have trouble finding the stand alone version. But, its out there somewhere...