Yes, definitely. It is the comparative form of the adjective "safe" (more safe). The superlative form is "safest" -e.g. My way is safe, yours is safer, but his is the safest.
safer
I think we need to buy an alarm to make the house safer.
safer
safer
Some word forms for "safe" include safety, safely, and safer.
Safer, safest, safehouse, safecracker, and vouchsafe.
When we had cyclone everyone had to evacuate, to a safer place.:(
Statistically speaking, flying is safer than driving.
"Due to the hazardous storm, many residents of the town evacuated to a safer location."
Due to the hazardous storm, many of the town's residents evacuated to a safer location.
help
The comparative is safe, and the superlative is safest.