求翻译：作为公交运营部门，是在车辆使用阶段预防着火发生的主要力量，必须要明确安全第一的原则，在拥堵时间段可以考虑加大运力投放，尽量避免超载现象的发生。是什么意思？

As public transport operations, vehicle use phase is the main force to prevent the occurrence of fire, must be a clear principle of safety first, in the congested time period can be considered to increase the transport capacity to avoid overloading phenomenon.

As a public transport operator sector, is the use of vehicles on fire prevention phase of the main force that must be clear, the principle of safety first in traffic jams can be considered time spent, increasing capacity to avoid overloading occurs.

As the public transportation operation department, is the main strength which catches fire in the vehicles operational phase prevention occurs, must have to be clear about the safety first the principle, is supporting stops up the time section to be possible to consider the enlarge transports the st

As public transport operations, is in vehicle use phase on fire prevention main forces, must be a clear principle of safety first, consider increased capacity put the congestion time period to avoid overloading.

As public transport operations, vehicle use phase is the main force to prevent the occurrence of fire, must be a clear principle of safety first, in the congested time period can be considered to increase the transport capacity to avoid overloading phenomenon.