4. Entrance to the pit lane
a) The section of track leading to the pit lane shall be referred to as the “pit entry”.
b) During competition, access to the pit lane is allowed only through the pit entry.
c) Any driver intending to leave the track or to enter the pit lane should make sure that it is safe to do so.
d) Except in cases of force majeure (accepted as such by the Stewards), the crossing, in any direction, of the line separating the pit entry and the track by a car entering the pit lane is prohibited.
From a) and d) there is nothing that is track specific about it.
Hamilton entered "pit entry" then changed mind and joined track. This should have been a slam dunk penalty.