Final answer:
Victor Airways on IFR En-route Low Altitude Charts have a width of 8 nautical miles and usually extend from 1,200 feet up to 18,000 feet MSL, defining corridors for IFR navigation.
Step-by-step explanation:
The general dimensions of a Victor Airway depicted on an IFR En-route Low Altitude Chart are defined as narrow corridors of airspace that are 8 nautical miles wide, extending 4 nautical miles on either side of the airway's centerline.
This airway system, used by aircraft navigating under Instrument Flight Rules (IFR), provides a network of routes connecting various navigation aids (NAVAIDs) such as VORs (VHF omnidirectional range) and TACAN (Tactical Air Navigation) stations. Victor airways typically extend from 1,200 feet above the ground up to, but not including, 18,000 feet Mean Sea Level (MSL), which is the start of the Class A airspace.