{TAIL ~ The method} further includes determining, in response to determining that machine retarding will be required, a desired retarding gear, and recommending the retarding gear to {HEAD ~ the operator} 
{ TAIL ~ The method } further includes determining , in response to determining that machine retarding will be required , a desired retarding gear , and recommending the retarding gear to { HEAD ~ the operator }
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 OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD