Autobahn

Placing an Employee is part of both the 'Build Road section' and 'Upgrade link' actions: after placing/flipping the road tiles and paying costs you must place an Employee in the leftmost empty seat of the matching Office (step 3). If you cannot pay the cost you cannot take the action. (p.8–9)

If the Office has no empty seats, transfer the Employee in the leftmost seat to the Administration Lobby, slide the remaining Employees left, and then place your Employee in the newly vacated rightmost seat; if you have no Employees in supply, return exactly 3 from the Lobby, place one, and then promote one. (p.9)

When a built Road section completes a link between two cities, update those cities: each autobahn with at least one completed single‑carriageway link to the city gives +2 value, and each autobahn with at least one upgraded dual‑carriageway link gives an additional +2; count different autobahns, not number of links. (p.9–10)

Yes — to move a Truck in Phase 3 it must start on a depot or road section matching the colour of the card you played, but once it starts you may move along any connected built road sections; Trucks move up to 2 steps in era 1 and up to 3 in eras 2–3, and starting on a dual carriageway gives +1 extra step. (p.11–12)

When you deliver (move one step beyond a neighbouring commercial city) you take that country’s bonus tile, return the Goods token, take a Delivery token and return your Truck; preferred goods place the Delivery token on the country’s goods icon so you can claim the bonus action later, other goods place it on the DM coins icon and you immediately earn the shown DM, and Pharmaceuticals: the first delivery grants the country’s Pharma bonus action while later Pharma deliveries may only earn DM (or nothing if the slot is full). (p.13)

For each Construction Office with at least one occupied seat, add the city values of all cities along that autobahn that are connected to the built network (including connected neighbouring countries), divide that total by the number of Employees in the Office rounded down, and each player gains that amount in DM for each Employee they have in that Office. (p.14)