In case of emergency, do not use lift.

[Tan Elaine]

In case of emergency, do not use lift.

Is the comma after "emergency" optional?

Thanks.

 

[Rover_KE]

Re: Is the comma optional?

If it's your responsibility to create such a warning sign, TE, use a comma.

In real life, I think you'll find that it's the lift (AE elevator) manufacturers/installers who put up those signs.

I frequently see - with considerable annoyance - warning signs reading

IN EMERGENCY
DO NOT USE LIFT
USE STAIRS