This is helpful with drawing precise curves such as building custom roundabouts. The blue line perpendicular to road direction while drawing denotes a measurement of 10 units, and it becomes visible at 5 units out.You can build bridges and tunnels by adjusting the road's elevation with Page Up and Page Down keys.You can bulldoze the two lane road piece and get a partial refund. Building a short segment of two lane road anywhere within city limits unlocks more roads, such as a one way road which is useful with the highway stubs you're provided at the start.2 Basic services and early budget management.
