OM3050 7/09 Operating Instructions - Section 30 Page 30-15 Traffic consideration for trolley line operation Trucks operating on trolley assist will travel faster than trucks unable to operate on trolley, most support equipment and some maintenance equipment. Because of this speed difference, trucks operating on trolley assist will actually be able to overtake some slower moving vehicles if allowed.
To maintain the highest level of effectiveness and efficiency of the trolley system, it is important that all personnel oper- ating equipment in the pit area react properly to trol- ley assisted haulage equipment and be aware of the proper procedures to allow faster moving haulage trucks to overtake the slower moving vehicles when possible. If a slower moving vehicle, traveling in front of a trol- ley assisted haulage truck, does not take the required action allowing the faster truck to overtake, the truck will reduce speed adequately to maintain proper following distances.
If proper following dis- tances cannot be maintained while operating on trol- ley assist, and the slow moving vehicle does not, or cannot, take the required action to allow overtaking, the trolley assisted truck will switch back to diesel mode, if necessary. If the slower moving vehicle takes the necessary action to allow the trolley assisted truck to overtake them, the trolley assisted truck will obtain maximum speed and overtake the slower moving vehicle as quickly as possible. Approaching slow moving vehicles in a trolley assisted truck As trucks operating on trolley assist approach slower moving vehicles, the truck operator must begin to reduce the trolley truck speed.
Operators must be looking well enough ahead to begin speed reduction before the truck gets too close behind the slow mov- ing vehicle less than 30 meters (100 ft). NOTE: Haul trucks must continue to maintain minimum following distances between equipment or vehicles of 30 meters (100 ft) uphill or on the level, and 60 meters (200 ft) downhill.