Even in such embodiments, the end portions would still provide {HEAD ~ added flexibility} and would facilitate rail section alignment by limiting resistance of a carriage passing over {TAIL ~ a substantially misaligned rail section joint} 
Even in such embodiments , the end portions would still provide { HEAD ~ added flexibility } and would facilitate rail section alignment by limiting resistance of a carriage passing over { TAIL ~ a substantially misaligned rail section joint }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL