Other changes were intended to make the D3 more passenger-friendly; the D3's roof has squared-off corners to increase headroom while standing up and a flat floor is available as an option in front-engine models.

The roof was also given a more upright stance to increase headroom, which can be evidenced by the thicker C-pillar and larger area between the tops of the doors and the top of the roof.

For example, in its new Model 6300, NAD takes the unique step of combining two special circuits to increase "headroom" - i.e., to provide greater frequency response and dynamic range.

The floor was often dug out by as much as three feet to increase headroom.

In 1918 the bridge and associated approaches were raised (as were other neighbouring bridges) to increase navigable headroom.

She was lengthened by 36 feet, and her passenger accommodation was raised to increase headroom in the car deck.

Dolby HX Pro: single-ended system used on high-end tape recorders to increase headroom.

While I liked the versatile seating configurations, I did not like the lowness of the seats, a design intended to increase headroom, which is indeed ample even for 6-footers.