I am far from stupid but I must be gullible.  I recently purchased a 4 pack of Bachmann "Reversing Track" The description accompaning this track on both Bachmann and dealer sites is totally useless.  I faithfully purchased the track anyway only to find out that the package contains NO INFORMATION that in any way tells me how I can successfully use this track to accomplish what the name "Reversing" implies. There is (on the package) ABSOLUTELY NO suggestion that I need anything other than the track to make my trolley reverse.  Nevertheless, the trolley does not accomplish that feat. 
Please, tell me what I need to make the track work and WHY Bachmann has been so misleading.