Sharing the Road
Pedestrians and bicycles
Pedestrians are the most vulnerable users and have the right-of-way in crosswalks. Bicycles are vehicles: they ride with traffic, obey signals, and may use the full lane when needed. Indiana requires drivers to leave at least three feet of clearance when passing a bicycle; if you cannot, wait until it is safe. Before opening your door, look for cyclists in the door zone.
Motorcycles
Motorcycles are entitled to a full lane - never share a lane with one. Their smaller profile makes speed and distance hard to judge, so look twice before turning or pulling out. In Indiana, riders under 18 must wear a helmet, but a helmet does not make the rider more visible to you.
Large trucks and buses
Tractor-trailers have large no-zones in front, behind, and along both sides. If you cannot see the truck driver's mirror, the driver cannot see you. Trucks need far more distance to stop, and they swing wide - often left - before turning right, so never squeeze between a turning truck and the curb. When sharing the road with a school bus, expect children near the roadway, and remember the stop rules for flashing red lights. Slow-moving farm equipment and horse-drawn buggies are common on rural Indiana roads; slow early and pass only when you can see far ahead.
Worked example: A semi ahead of you signals right but drifts left. Do not pass on the right - the driver is setting up a wide turn and the trailer will sweep across that space.
Trap: questions imply motorcycles or bicycles must get out of your way, or that a truck's right turn is a normal tight turn.