Dynamic　scheduling　of　vehicles　is　studied　in　this　paper.　A　new　framework　for　dynamic　scheduling　of　delivery　vehicles　is　proposed.　It　is　a　hybrid　one　that　incorporates　elements　of　the　hierarchical　and　heterarchical　framework.　The　scheduling　systems　based　on　it　can　produce　both　robust　and　globally　optimized　solutions　in　complex　and　dynamic　environments.　It　can　be　implemented　using　intelligent　agent　technology.　Details　of　each　agent　and　the　interaction　are　described.　The　flow　of　information　in　the　dynamic　scheduling　system　is　given.