从1990年到1998年，公路运输量增长了19.4%。
但大多数危险货物往往不是在它们的生产地点被使用，而是需要经过较长距离的运输才被使用或处置，危险货物的公路运输量巨大。
Most hazardous materials are not used at their point of production, they are transported over considerable distances, and their road freight volumes are high.
但大多数危险货物往往不是在它们的生产地点被使用，而是需要经过较长距离的运输才被使用或处置，危险货物的公路运输量巨大。
Most hazardous materials are not used at their point of production, they are transported over considerable distances, and their road freight volumes are high.
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