The _carpentum_, though two-wheeled, bore resemblance to the Greek ἁρμάμαξα. It had an arched covering. It was in use during very early times at Rome, though only distinguished citizens were privileged to ride in it. The _currus arcuatus_, given by Numa to the Flamines, was no doubt a form of _carpentum_, which was also the travelling carriage of the elder Tarquin. It seems to have been evolved from the _plaustrum_, being originally little more than a covered cart; but in the days of the Empire it became most luxurious, and was not only furnished with curtains of the richest silk, but seems to have had solid panellings and sculptures attached to the body. Agrippina’s _carpentum_, for instance, had fine paintings on its panels, and its roof was supported by figures at the four corners. Like the ἁρμάμαξα, it was also used as a hearse. Two mules were required to draw it. The _pilentum_ was a carriage of a more official character. It may be called the state coach of the Romans—a four-wheeled becushioned car with a roof supported by pillars, but, unlike the _carpentum_, open at the sides. It was always considered to be the most comfortable of the Roman carriages, and may indeed have been hung upon “swing-poles” between the wheels. The social difference between the _pilentum_ and the _carpentum_ may be deduced from one of the many carriage laws passed by the Senate. The Roman matrons were allowed to drive in the _carpentum_ on all occasions, but might use the _pilentum_ only at the games or public festivals. Such “sumptuary laws” were constantly being passed, and a special vote was even required to enable the mother of Nero to drive in her carriage in the city itself. It was not until the fourth century A.D. that all such restrictions were banished.