Embodiments of the present invention relate to {TAIL ~ a control system} for a bicycle towing a trailer; however other similar embodiments may apply to combustion, electric or hybrid engines powering a vehicle towing {HEAD ~ a trailer} 
Embodiments of the present invention relate to { TAIL ~ a control system } for a bicycle towing a trailer ; however other similar embodiments may apply to combustion , electric or hybrid engines powering a vehicle towing { HEAD ~ a trailer }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD