The law doesn't say that, not does it? it bans what Muslim women wear, and nothing else...
Most places around the world have a requirement to remove masks, helmets and face coverings on demand by police or security.
There are only a handful of countries that require a woman to wear such clothing but even other countries in the muslims world can require proof of identification and for the face to be revealed, at least to a female officer. Many of those countries used to ban the burka and even the hijab in public buildings, schools, many government offices, etc.
Burka is a choice not a requirement