...
Large and Extra Large (L/XL) ships (AKA capital ships) use free-flight within zones and boosters between zones. They are unable to use any highways. Capital ship boost speeds are typically 24-25-times their started regular speed (e.g. . For example, a Taranis without engine damage has a top speed of 80 m/s, and boosts at 2000 m/s). The An exception to that are Teladi Capital ships, which boost at 16.2-times their regular speed (e.g. 95 m/s or and 1435 m/s, respectively, for a Phoenix Marauder).
As ships increase in size between S to XL their speeds and turning rates tend to decrease, so within a given zone small ships tend to reach their destinations quickest. However if a ship needs to travel between a few widely-spaced zones, capital ships tend to be quicker because although they are slower than S/M ships their boost can save time as it can operate continuously, and the ship flies directly to its destination rather than sticking to the highway route.
...