With all do respect I disagree with the other answer. What street are you talking about specifically?
I think the previous answer you got infers some type of discrimination, or steering as its called in the industry. For example if you showed potential minority buyers houses only in minority neighborhoods etc.
It is debatable, but I do not think it is unreasonable to answer a safety question. I grew up in South Boston, and to be honest there are some streets that I would not live on and that I would consider unsafe for a number of reasons. 1.High traffic volumes. 2. Certain houses on certain corners are known to have cars crash in to them every couple of years. 3. There are a couple of houses in town that have had fires multiple times for various reasons. 4. I think it would be illegal to not tell you that there was a meth lab next door. 4. Bus routes. 5. Adjacent to former industrial contaminated sites. 6. Houses that are in the jet path to and from logan.
This is where local experience pays off. Send me an email, or give a call if you have any questions. I would be glad to help.