Definition
A published route used by the military for specific training activities, often involving high-speed, low-altitude operations or other maneuvers that require dedicated airspace. SMARs are charted so civilian pilots can identify and avoid them, and ATC may issue advisories when military activity is in progress.
Plain English
A route the military uses for certain training flights. It is shown on charts so other pilots know where these flights happen and can stay clear.
Context Anchor
Seen in flight planning, air traffic control information, and pilot/controller references involving military aircraft operations.
Derivation
‘Special’ signals that the route is set aside for a particular purpose; ‘Military Activity Route’ describes what happens there. The wording mirrors related route designations like Military Training Route (MTR), so pilots recognize the family of military-use routes.
Why Pilots Care
Helps civilian pilots anticipate and avoid high-performance military traffic that may not follow normal patterns.
Intuition Check
Do not assume “special” means the route is automatically closed to all other aircraft. Here, “special” means the route is designated for a military activity, so current information and air traffic control instructions matter.
Example Sentence 1
Before the cross-country flight, the pilot checked the chart for any SMAR crossing the planned route.
Example Sentence 2
ATC warned of activity on SMAR 456 so the flight climbed to avoid the area.