2003 · ソースブック（プレイを拡張するルール／オプション）
On the Ground
A Traveller reference guide to privately owned ground vehicles across the Imperium. It expands the vehicle design rules with guidance on construction, vehicle size, towing, power plants, tires, speed, and durability. The 24 illustrated vehicles range from steam-powered carriages to performance motorcycles and heavy-duty trucks. Each includes a full description and vehicle design statistics, alongside information on the corporations that build and service commercial and private vehicles.
スキルベース（スキルを購入または獲得）ダイス（主にd6）属性／ステータス制（STR、CON、PERなど）
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。