Driving with a Concussion Is Dangerous Concussion impairs the three cognitive functions most critical for driving. Reaction time slows by 15-30% after concussion, even in patients who feel "mostly fine." Divided attention (monitoring multiple inputs simultaneously: mirrors, traffic, signals, pedestrians) is one of the most energy-intensive cognitive tasks and is consistently impaired after concussion. Visual processing speed, including peripheral vision detection and depth perception, is reduced. These deficits are present before the driver is aware of them (Baker & Bhatt, 2022). Feeling "mostly fine" is not the same as being safe to drive. Patients consistently overestimate their driving readiness after concussion. The cognitive deficits that impair driving are the same deficits that impair self-assessment. The brain that cannot process information quickly enough to drive safely also cannot accurately judge whether it is processing information quickly enough. This is why objective assessment (cleared by a provider or passing formal testing) is more reliable than subjective judgment. A driving test demands peak cognitive performance under stress. The test adds anxiety on top of the cognitive demands of driving. Anxiety consumes additional processing resources from an already depleted energy budget. Concussion patients who perform adequately in relaxed driving may fail under the additional cognitive load of test conditions. Postpone until you are symptom-free for a full week and confident in your reaction time. When It Is Safe to Drive The standard recommendation: symptom-free at rest and during cognitive exertion for 24-48 hours before driving. "Symptom-free" means no headache, no brain fog, no dizziness, no visual disturbance, and no fatigue at baseline. Test this by performing a cognitive task (reading, math, screen work) for 30 minutes. If no symptoms emerge, your cognitive system is likely functioning well enough for driving. Start with short, familiar routes. Your first drives should be 10-15 minutes on routes you know well, during low-traffic times, in good weather. Gradually increase distance, complexity (unfamiliar routes, highways, night driving), and traffic density. If symptoms emerge during driving, pull over safely and arrange alternative transportation. Do not take a driving test until you are comfortable on highways and in traffic. The test requires demonstrated competence in complex driving situations. If highway driving or busy intersections still feel overwhelming, you are not ready for the test. There is no urgency that justifies risking your safety or a test failure from concussion-related cognitive deficits. Exercises to Support Cognitive Readiness JME 155 Diaphragmatic breathing before driving reduces the autonomic arousal that compounds cognitive deficits. Anxiety about driving after a head injury increases sympathetic activation, which reduces the processing capacity available for the driving task itself. Ten breaths before starting the car shifts autonomic state toward calm, maximizing the cognitive resources available for driving. 4-second inhale, 6-second exhale, 10 breaths. JME 14 Chin tucks before driving address the cervicogenic component that worsens during the sustained posture and head-turning demands of driving. Driving requires repeated shoulder checking, mirror scanning, and sustained forward gaze, all of which load the upper cervical spine. Pre-drive chin tucks reduce the cervical starting load so the driving demands do not trigger headache. 10 repetitions with 5-second holds before getting in the car. JME 1 Cervical rotation before and during driving breaks maintains the proprioceptive accuracy needed for head-on-swivel scanning. Driving demands constant head rotation to check mirrors and blind spots. If cervical proprioception is impaired, each head turn produces a brief spatial disorientation that accumulates over a drive. Pre-drive cervical rotation calibrates the system. 10 repetitions each direction before driving and during any stop breaks. JME 150 Thoracic rotation before driving prepares the trunk for the rotation demands of shoulder checks. When thoracic rotation is restricted, the cervical spine compensates for every shoulder check, accelerating cervicogenic symptom development during the drive. 8 repetitions per direction before driving. Start your 3-day free trial for mobility programming that supports daily function during concussion recovery. Flying After a Head Injury Flying is generally safe if symptoms are stable or improving. The primary concern with flying is cabin pressure changes during ascent and descent. Aircraft cabins are pressurized to the equivalent of 6,000-8,000 feet altitude. This mild pressure reduction does not cause additional brain injury but affects some concussion patients through sinus pressure changes, mild hypoxia (reduced oxygen), and dehydration from cabin air. When to avoid flying: Within the first 24-48 hours of a significant concussion (symptoms still developing) If symptoms are worsening rather than stable or improving If severe headache is present (pressure changes worsen headache) If a medical provider has specifically advised against flying If imaging showed any intracranial bleeding (pressurization is contraindicated) If you fly during recovery: Stay hydrated (cabin air is dry, dehydration worsens concussion symptoms). Use noise-canceling earbuds to reduce auditory processing demand. Avoid alcohol on the flight. Perform the breathing protocol during ascent and descent. Choose an aisle seat for easier break access. Accept that you will likely feel worse at your destination and plan a low-demand arrival day. Travel Considerations JME 3 Lateral cervical flexion during travel breaks releases the tension from sustained travel postures. Driving, flying, and train travel all hold the cervical spine in a static position for extended periods. Regular cervical stretching during stops or on the plane prevents the progressive tension that triggers headache. 8 repetitions per side during every break. JME 42 Shoulder circles during travel maintain upper body circulation and release the shoulder elevation from travel stress. Airports, traffic, and unfamiliar environments increase stress and muscular tension. Shoulder circles at regular intervals prevent the tension accumulation. 10 repetitions each direction. JME 15 Cervical extension during travel breaks reverses the sustained flexion of looking at phones, books, or dashboards during travel. Extended travel in cervical flexion reduces brainstem blood flow and compresses posterior cervical structures. Regular extension breaks maintain cervical health. 8 repetitions. JME 151 Lateral side bends with breathing provide a complete trunk and autonomic reset during travel stops. Travel is a high-demand activity during concussion recovery (sensory input, cognitive navigation, physical immobility, schedule pressure). This exercise addresses multiple travel stressors in one movement. 8 repetitions per side during each stop. Support recovery on the go with simplmobility's anywhere mobility programming. Making the Decision Use this decision framework: Symptom-free at rest and during exertion for 24-48 hours? Safe to drive short familiar routes, safe to fly. Mild symptoms that are stable and improving? Postpone driving test. Short familiar driving is acceptable if no dizziness. Flying is acceptable for essential travel with precautions. Active symptoms that fluctuate or worsen with exertion? Do not drive. Postpone driving test. Postpone non-essential travel. Flying only for medical necessity. Symptoms worsening or new symptoms developing? Do not drive. Do not fly. Seek medical evaluation. The driving test specifically: there is no rush. A failed driving test costs money, time, and confidence. Taking the test while cognitively impaired is likely to result in failure. A two-week postponement costs nothing compared to the risk of failing or the danger of driving impaired. Reschedule when you are genuinely confident in your cognitive function, not when you think you should be better. How long after a concussion should I wait to take a driving test? Wait until you are symptom-free for a full week and comfortable driving in all conditions (night, highway, traffic). For most concussions, this is 2-4 weeks. Do not use a calendar date. Use symptom-free status. Everyone recovers at a different rate. Is it safe to be a passenger after a concussion? Being a passenger is generally safe but can trigger symptoms. Motion triggers the vestibular system, visual flow through car windows demands sensory processing, and road noise is auditory stimulation. Sit in the front seat (less motion sickness), close your eyes during symptom spikes, and use the breathing protocol during the ride. What if I have to travel for work during concussion recovery? Request accommodation to postpone or attend virtually. If travel is unavoidable, build recovery time into the itinerary: arrive the night before, schedule low-demand time after travel, avoid back-to-back travel days. Inform your employer about the concussion so expectations are appropriate. Travel during recovery is manageable with planning but extends the recovery timeline if not managed. References Baker, A., & Bhatt, T. (2022). Driving performance and concussion: a systematic review. Traffic Injury Prevention, 23(1), 1-7. PubMed Patricios, J. S., et al. (2023). Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport, Amsterdam, October 2022. British Journal of Sports Medicine, 57(11), 695-711. PubMed