The route itself
A direct route is simpler but is not always available. Some shipments involve terminals, ports, borders or a change of transport mode.
Schedules and connections
Rail, sea and air movements depend on schedules. In a multimodal route, the timing between separate stages is especially important.
Documents and procedures
Incomplete or inconsistent information can slow formalities. Checking documents before dispatch is therefore part of transit-time planning.
Cargo characteristics
Oversized, temperature-controlled, dangerous or other special cargo may require additional preparation and approvals.