Background: Even the most skilled anesthesiologists have always found it difficult to intubate patients whose cervical spine movement is restricted or undesirable. When head and neck are restrictedoral, pharyngeal, and laryngeal axis cannot align, and patients with cervical spine fractures are more likely to experience difficult intubation. Cervical collars can be used to simulate difficult intubation. The current study simulates a difficult airway in patients wearing rigid cervical collars in order to assess and compare the effectiveness of the King Vision Video, Airtraq, and Macintosh laryngoscopes.Methods:This was a prospective, single blind study conducted in a teaching hospital in Bihar. 120 Patients, ASA I and II, aging 18-60 years, undergoing elective surgery under general anaesthesia were enrolled in three groups. Group K (King Vision Video laryngoscope ), Group A (Airtraq laryngoscope) and Group M (Macintosh laryngoscope). Time for intubation, POGO score, IDS, number of attempts were compared.Results:The mean number of attempts in group M was 1.77, in group A was 1.2 and in group K was also 1.2, (p-value=0.00). Mean intubation difficulty score was 3.77 in group M, 2.98 in group A and 1.25 in group K. Mean percentage of glottic opening was 53.18 in group M, 62.28 in group A and 78 in group K, (P-value=0.00). 80% had successful intubation during first attempt in group A and group K and 40% in group M.Conclusion:The King Vision Laryngoscope is the easiest maneuver to use. Its benefits include a quick intubation time, minimal need for additional trials, almost no difficulties compared to Airtraq or Macintosh laryngoscopes, and no notable changes in hemodynamics following intubation.