When riding in a group of motorcycles on a public road in Bosnia and Herzegovina, how must the riders position themselves within a single traffic lane?

1. In a staggered formation (cik-cak formacija) with adequate safety margins between each rider
2. Side by side (parallel) within the same lane to take up less road length
3. Directly behind one another in a single tight file within 1 metre of each other
4. Spread out across both lanes of a two-lane two-way road