The lines marking out the court are easily distinguishable and coloured white or yellow. The lines are 40mm wide. A court may be marked out for singles only. The back boundary lines also become the long service lines and the posts or the strips of material representing them are placed on the side lines.
Court For Play (aka boundaries) Note that this does not include the serve as the serve has its own boundaries, which will be covered below. If a player hits a shuttle and it lands outside these boundaries, it is considered as 'out' and the opponent wins a point and the serve.
In singles the court is thinner, with the wide, outside 'tramlines' out of bounds. In doubles the court is full width and these tramlines are now 'in'. During service in doubles, the court is short, with the rear 'tramlines'at the back of the court, being out of bounds until the serve is returned.
With laws of badminton dictating specific rules for service in badminton, the court has two service lines, the short service line, which is 1.98m (6.5 feet) from the net, and long service line 0.72m (2.36 feet) in from the baseline, specifically marked for this purpose.
Each side of a badminton court has a right and a left service court for singles. Each singles service court is bounded by the short service line, the centerline, the singles sideline and the back boundary line.
The outer sidelines are sometimes referred to as “outer tramlines” or “doubles sidelines”. On a regulation badminton court, the outer sidelines will run the full 13.41m /44.00ft length of the court. The outer sidelines are marked 5.18m (17.00ft) apart and run parallel to one another.
Arm out in front, hand open, palm facing down to signify that the shuttle was in. This can also be shown by a finger pointing down. Similarly for saying a shuttle is out, you can simply point with one finger outwards in the direction it landed out.
The singles side lines are not the outermost lines, but the next ones in. Taken together with the outermost (doubles) side lines, these make narrow alley shapes along the sides of the court. These alleys are often called the tramlines or side tramlines, since they look like tram or train tracks.
If the cork part of the shuttlecock hits the line irrespective of the rest of the shuttle, it is going to be in. It is only out if the shuttle does not hit any part of the outer court line.
A singles service court is a box made from four lines: The centre line. A singles side line (inside side line) The front service line. The back line (the outside one, all the way at the back)