What mode of transportation is most heavily relied upon for intraurban freight in the United States?

The most heavily relied upon mode of transportation for intraurban freight in the United States is trucks. This is primarily due to their flexibility, efficiency, and ability to access a wide range of locations within urban environments. Trucks can easily navigate through city streets and deliver goods directly to businesses, warehouses, or retail locations, which is crucial for meeting the demands of consumers and businesses alike.

Additionally, trucking offers a quick turnaround time compared to other modes like trains, which may require transfers and more complex logistics due to their fixed rail systems. While trains are effective for long-distance freight and bulk commodities, they are less suited for the rapid delivery needed for intraurban freight. Similarly, buses are primarily designed for passenger transport and lack the capacity and infrastructure to handle freight efficiently. Bicycles, while excellent for short-distance transportation of small loads, cannot match the volume and speed of trucks for larger freight needs. Therefore, trucking remains the dominant choice for moving goods within city limits.