Bwi tower controller reported allowing an aircraft to land while vehicles were on the runway.

Attributes
ACN	1479395
Time
Date	201709
Local Time Of Day	0601-1200
Place
Locale Reference	BWI.Tower
State Reference	MD
Environment
Light	Daylight
Aircraft 1
Make Model Name	Medium Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 91
Flight Phase	Landing
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 22
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Critical Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Ground Incursion Runway

Narrative:

Vehicle requesting to access runway 33L at departure end in the rsa (runway safety area) and second vehicle checking rsl (runway surface lights) and never cleared the runway while meeting up with other vehicle in rsa and exited vehicle and I allowed aircraft X to land on runway 33L.I should have used memory aid to remind me the vehicle never cleared the runway.

Original NASA ASRS Text

Title: BWI Tower Controller reported allowing an aircraft to land while vehicles were on the runway.

Narrative: Vehicle requesting to access Runway 33L at departure end in the RSA (Runway Safety Area) and second vehicle checking RSL (Runway Surface Lights) and never cleared the runway while meeting up with other vehicle in RSA and exited vehicle and I allowed Aircraft X to land on Runway 33L.I should have used memory aid to remind me the vehicle never cleared the runway.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.