Flight Crew Air Transport Pilot (ATP)
Conflict Airborne Conflict; Inflight Event / Encounter CFTT / CFIT
Flight Crew FLC Overrode Automation
Airspace Structure; Environment - Non Weather Related
Being vectored to a visual approach Runway 22 into ROA; we had a terrain caution followed by a pull up and responded accordingly.GPWS announced the warning.While remaining at the assigned 4;000 feet from ROA approach; we were on a left base for Runway 22 when we received the terrain warning and associated pull up.I instantly disconnected autopilot and climbed the aircraft 200 feet. Although I was mainly focused on the instruments during that time; I'm confident that the warning was dismissed almost instantly once passed the highest point on the ridge being crossed.My only suggestion would be crews deliberately discuss crossing ridges at the lowest point possible at assigned ATC altitudes or opening up conversation with Roanoke approach to see if we can get higher altitudes and longer vectors. I did read the previous write about the crew going into Roanoke and having the same issue and this event was discussed in the cockpit well before it happened so both the captain and myself were ready to respond to the caution.
Cleared visual approach Runway 24 in ROA; on left base outside HIBAN on GPS 24 approach; descending to 3;700 feet; GPWS sounded terrain; pull up. Terrain was selected on MFD and not depicting terrain. Briefed waiting to descend to 3;700 for HIBAN until after crossing ridge just too south of course; initiated descent passing ridge; but GPWS still sounded. Most likely caused by the RA sensing a rapid increase in terrain passing ridge as I initiated the descent. Turbulence may have contributed by causing a momentary descent rate greater than selected.I was able to visually verify we were clear of terrain and initiated an immediate climb. The alert silenced after climbing approximately 100 feet. For this approach in particular; there is no need to leave 4;000 (last ATC assigned altitude) until basically over HIBAN in VMC conditions. There is still plenty of time to lose excess altitude to follow the FPA. I should have just stayed at 4;000 until turned onto the approach more considering I had given myself the distance from HIBAN to make a shallow descent and still configure with plenty of time to have a stable approach.
Air Carrier flight crew reported being vectored in area of high terrain which caused GPWS to issue warning.