City officials have launched a new effort to increase the number of children who walk or bicycle to school. Mass in Motion Salem is conducting an anonymous survey on how Salem children get to and from school. The city will use the data to help identify areas where biking and walking can be increased, and ways safety issues can be addressed. The survey was developed as a tool for communities by Massachusetts Safe Routes to School, a federally funded program of the state Department of Transportation. The survey is open to any resident of Salem with children in the city’s public schools. It can be downloaded in eight languages, in addition to English, from masaferoutessurvey.org; the Facebook page MassinMotionSalem, or the School Department’s website, salem.k12.ma.us. Paper copies are also available in English and Spanish at local school offices. Responses will be accepted until Nov. 15. The city is also participating in International Walk to School Day on Wednesday, when all students are encouraged to walk or bike in the morning for all or part of the way to school. Go to www.walkbiketoschool.org for more information.