This page is dedicating to working on Washington Bike Mashup Maps: https://washingtonbike.wetpaint.com/page/Mashup+Map?t=anon
And another Map for Police incidents, tickets and warnings, and bike accidents:
https://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=110783320719658065016.0004519876ef8015b5aa3&ll=38.858255,-77.06943&spn=0.389787,0.601501&z=11
Note that we have the capability for the latter here: https://www.margieroswell.com/maps/bike.htm
With your help we can make this a valuable information tool.
Biking in Baltimore