Traction nhyehyɛe yɛ nneɛma atitiriw wɔ mfiridwuma mu, ɛde traction anaa breki ahoɔden kɔ, na ɛwɔ dwumadie a wɔtaa de di dwuma wɔ keteke akwantuo mfiri mu. Wɔ nkuropɔn mu keteke kar bogie nhyehyɛe mu no, saa afiri yi de afã abien-afã obliquely symmetrical traction rod nhyehyɛe di dwuma de nya tumi a wɔde fa kwan so. Ɛne afiri a wɔde hyɛ mu no bom yɛ bogie nhyehyɛe no. Wɔnam 3D modeling ne dynamic simulation so di ne ahotoso a ɛwɔ 100 km/h no ho adanse. Wɔ keteke a ɛde ahoɔhare kɛse -m no, bogie nhyehyɛe a ɛyɛ kilomita 400/h no fa mfinimfini pin ne twetwe poma abien a wɔaka abom nhyehyɛe. Wɔde nkɔnsɔnkɔnsɔn a wɔatwa no tẽẽ di dwuma na wɔakwati sɛ afã a ɛyɛ den no bɛkɔ soro, na wɔde rɔba a ɛyɛ mmerɛw a ɛka bom di dwuma de nya ahoɔden a ɛkɔ akyiri.
Wɔ keteke a ɛfa kar bogie nhyehyɛe ahorow mu no, twetwe nhyehyɛe no, sɛ ade titiriw a ɛka bom no, na ɛde ahoɔden a ɛkɔ akyiri a ɛkɔ kar nipadua ne bogie no ntam no ba titiriw. Traction rod structures abien a wɔakyekyɛ no obliquely symmetrically a wɔde di dwuma no di kar no mu duru a emu yɛ hare ho ahwehwɛde ahorow ho dwuma bere a wonya ahoɔden a wotumi de ho to so a wɔde fa so no. Wɔayɛ saa mfiridwuma yi ayɛ no mfinimfini pin double traction rod combination structure a ɛfata ma 400 km/h high-speed trains.
