This page serves as the primary resource for editors of Maryland. Review all the sections to better understand how the guidelines for this state might deviate from the overall USA or worldwide guidelines. If you have any comments or questions about this page or state refer to the community links below.
New speed limit guidance in the Major roads section below.
- 1 Introduction
- 2 Mapping resources
- 3 Community
- 4 Cities and towns
- 5 Major roads
- 6 Special roads
- 7 Closures
- 8 Places
- 9 Cameras
- 10 To do list
- 11 Other
- 12 Area Managers
- 13 Other states and territories
- 14 About this page
Maryland is a part of the Mid Atlantic region, which includes the states and/or territories of:
Before editing the maps in Maryland, be sure to fully review and understand the editing manual.
The Waze user community follows the Waze etiquette guidelines discussed in the Wiki. Be sure to familiarize yourself with these guiding principals while editing the maps and this Wiki, as well as when communicating with other Waze users.
Please review the USA Functional Classification page and the FC Quick Reference Chart for details on this topic. In rare cases, a particular road may require a different type than prescribed in the national guidance. Before changing the type of any road past the bounds of the rules, please post the situation to the Maryland Forum to receive feedback. Maryland resources can be found in the following links:
- SHA Highway Location Reference (PDF Reports by County)
- MD SHA Functional Classification Map
- nzahn1's Mapping Resources (2012, Google Earth)
- Carroll County
- Carroll County Function Classfication Webpage (2007)
Use these state-wide maps for the names and numbers of Interstate, US, and State highways. They also include the names of many local roads.
- Grid Maps PDF
- Town Maps PDF In addition to the Census Designated Places that Maryland uses for the City Layer, there are 157 incorporated municipalities. See the Cities and Towns section for Incorporated Cities boundary files to use as WME Map overlays.
- Highway Location Reference PDF
Tools to identify street addresses:
- MD Finder: From the Layers list select "Parcel Points." Type in the full address (Street, City) then add "Parcel Boundaries" and/ or "Six-Inch Imagery." Click on the green "parcel point" to view address information.
- MD Dept of Planning (merlin). Under the Contents tab, check Parcel Boundaries and uncheck all other options. Navigate to a property and click it, then click SDAT URL in the popup for the Real Property page.
Counties and cities
Use these maps for the names of local roads and smaller streets not identified on the state maps. Some also provide house numbers.
- Alternate version that links to SDAT.
- Baltimore City GIS Choose City Map from the Base Map drop-down menu (all other options are copyrighted).
- Baltimore County GIS
- Calvert County GIS
- Carroll County GIS
- Cecil County GIS
- Frederick County GIS
- Garrett County PDF
- Harford County GIS (Open in ArcGIS)
- Howard County GIS
- Choose Interactive Map for house numbers and road names
- Montgomery County GIS
- Prince George's County GIS
- Queen Anne's County GIS
- Saint Mary's County GIS
- Washington County GIS
The Waze forum is a great place to find answers to previously asked questions and also a place to ask new ones. Below are links to the forums specific to Maryland.
- Maryland section of Waze forum
- The Mid Atlantic region forum
- The USA section of Waze Forum
- The USA segment unlock requests
New editors should consider checking into the formal mentoring program available at no charge.
Cities and towns
One of the most common errors when editing the maps is when an editor creates a road and does not confirm the road by setting the city and road name (or stating it has none).
There are 157 incorporated places in Maryland. When assigning the city name to a road segment or landmark, use the name of the incorporated place or CDP (census-designated place). If it is outside the boundaries of either of those, set the city name as None. Do not use the names associated with ZIP codes or the name of a neighborhood, community, or subdivision not included on the census map. If the road type is Freeway, set the city as None (except in Baltimore City), regardless of the location, as this helps with routing. Be sure to also set the city name of any alternate names correctly. Please discuss any deviations from this guidance in the Maryland Forum.
- Maryland 2010 CDP Maps (PDF by County, with street overlays)
- Maryland 2014 CDP / Incorporated Cities boundaries (KML)
- Overlay the above boundary file(s) with the WME Geometries Plugin. After loading the file(s) in WME, turn on the Roads layer (to reference existing CDP/ City names) and the cities layer (to view which WME city boundary may need to be modified).
In Maryland we have a set minimum standard for locking roads based on segment type. Any road of a certain segment type must be locked at least to the rank (level) in the chart below. Roads may be locked higher for protection and special situations (areas with construction, tricky design, frequent mistakes, imaging inaccuracies, and the like), but should not be locked lower.
A great time to implement these locks is while bringing the road types of an area into compliance with the current US road type standards (FC and highway systems). Lock the roads based on type after they've been set to current US road type standards.
Note that these are minimums and, for protection, certain segments may be at higher lock levels. If you find a road locked to a higher level than its minimum, please leave it locked no lower than that level when you have finished editing.
Maryland follows the national guidelines for adding speed limits to the map. There are a few items left up to local guidance which will be enumerated below.
Maryland law includes the following restrictions on the designation of speed limits. 
- Maximum speed limits are as follows, unless otherwise signed/posted:
- 30 miles an hour on all highways in a business district;
- 30 miles an hour on undivided highways in a residential district;
- 35 miles an hour on divided highways in a residential district;
- 50 miles an hour on undivided highways in other locations;
- 55 miles an hour on divided highways in other locations.
- Speed limits may be revised after a traffic study and then posted, but no limit may exceed 70 mph.
- Maximum speed limits for local jurisdictions are:
- 15 miles an hour in alleys in Baltimore County.
National guidance recap
- The ONLY speed limits which should be added to the map are Regulatory Speed Limits. These are marked with black lettering on white rectangular signs.
- Advisory speeds
- Truck speed limits
- Night speed limits
- Speed limits should change where they legally go in effect. When a speed limit changes in the middle of a segment, a new junction should added to support the SL change. However a new junction should never be added for a SL if it will be within 200 feet of an existing junction, or potential junction.
Work zone speed limits
We only consider the regulatory signs, and never map advisory speed limits.
- Interim guidance in Maryland until the Speed Limit feature goes live to production to production in the client app.
- Only add Work Zone SLs if they are anticipated to persist more than a year.
- For projects expected to last less than a year:
- Add the regular underlying SL to the segments
- Document the WZ SL as a [NOTE] UR with the keyword
mphincluded in the text.
- After the Speed Limit feature goes live in the production client app adding WZ SLs to segments will generally be allowed.
- Typically only projects which are expected to last at least 3 months should be added to the map.
- The underlying SL, and expected project completion date should be documented in a [CONSTRUCTION] UR with the keyword
mphincluded in the text.
- Projects of shorter duration may be added as well, IF the editor has access to frequent status updates on the project, and is willing to monitor and adjust as soon as the SL is restored.
Where speed limits change
The Maryland supplement to the MUTCD stipulates that: A Speed Limit sign in a speed zone shall be located at or just beyond the point where the zone begins. If the zone begins at an intersection, the first Speed Limit sign for that zone shall be the Speed Limit sign normally erected beyond the intersection conforming to the standard sequence of signs at intersections.
Maryland is a state where the speed limits are absolute and are enforceable from statute; speed limits need-not be posted to be enforced.
When adding speed limits to WME we should try to be as accurate as reasonable, while still preserving data for turn delays. Therefore if a speed limit changes in middle of a segment we will create a new junction to support the SL change. However if there is already an existing junction, or we can see the need to create a new junction to connect another segment to the road within 200 feet of the speed limit sign, we should mark the SL change using that existing (potential) junction node.
If at the editor's discretion in consultation with local managers, it is determined that a new junction to support a SL change between 200 - 1,000 feet away from a junction would have a negative impact on turn delay calculations, they may instead affect the SL change at an existing (potential) junction up to 1,000 feet away from the SL sign. This may be because the SL change is posted in middle of turning or exit lane where traffic regularly backs up from the following junction to before the position of the SL sign.
Maryland follows the standard USA guidelines for all of the following special road types.
- Divided highways and roadways
- Carpool, HOV, Transit lanes
- Roundabouts and traffic circles
- Toll roads
- Partial and scheduled restrictions
- Private installations and military bases
Review the Wiki guidelines for non-drivable roads to ensure compliance with the general guidelines.
Guidelines that vary by state or territory
The following special roads are managed slightly uniquely in some states and territories. This state uses the following standard guidelines found in the Wiki.
Construction projects or emergencies that cause roads to be closed should be reported on this Closure Form. Events that cause road closures should be reported on this Event Form. Current closures and events in Maryland that have been reported to Waze are shown in the MD Closure Sheet.
Not every camera-looking device at an intersection is a speed or red light camera. Generally speaking:
Be sure to know your cameras before accepting new camera reports.
When adding a camera, be sure to review the camera placement recommendations.
Laws regarding speed and red light cameras vary between the states and territories, so be sure to understand the details of camera legality in Maryland.
Based on information researched at the time this page was created, the limited legality of speed cameras in Maryland is described below, and red light cameras are legal statewide in Maryland.
No other camera types should be mapped in Waze.
Speed cameras are authorized for use in the following areas: school zones throughout the state, work zones on freeways and major highways, and on streets in Montgomery County. Speed cameras can be mounted to a pole, concealed in a metal cabinet on the ground, or mounted on a trailer or vehicle parked on the shoulder, such as these used in work zones. Most speed cameras in Maryland will not issue a ticket unless the vehicle is exceeding the speed limit by at least 12 mph; however, when setting the speed of a camera in the editor, use the speed limit of the road.
Many speed cameras are portable and moved on a regular basis, in some cases weekly. This is usually indicated on the website and may include a rotation schedule. These reported camera locations should not be on the map. However, if the speed camera is not portable or is not moved on a regular basis, then it should be on the map. Check the County-based links below.
Red light cameras
Red light cameras are authorized for use throughout the state. Please note that each red light camera fixture only records violations in one direction, so be sure to check which direction(s) are enforced, and include a camera in the editor for each applicable direction.
Some red light cameras also include radar, and enforce speed limits. This is especially true in Baltimore City.
The Wiki page for Waze Cameras states that, Speed limits "can also be set for a Red Light Camera if it monitors for Speed Limit Violations as well. Leave set to blank if speed is not monitored." However, this function has not been confirmed in the client.
Other camera types
These are cameras or signs that either provide driver feedback or are used for traffic control. These devices cannot issue tickets and should not be mapped. However TRAFFIC Cameras can be used to monitor emergency closures (for accidents, etc.) See below.
Camera location lists
- Maryland CHART interactive map - Traffic Cameras and Closures
- TrafficLand Camera Feed - Maryland
- Statewide - SHA Work Zones - Speed
- Statewide - Red Light (Unofficial)
- Anne Arundel - Red Light
- Baltimore City - Red Light & Speed
- Baltimore City - Map of Locations
- Baltimore County - Speed
- Charles County - Red Light
- Charles County - Speed
- Howard County - Red Light
- Howard County - Speed
- Montgomery County - Traffic
- Montgomery County - Red Light
- Montgomery County - Speed
- Prince George's County - Red Light
- Prince George's County - Speed
- Annapolis - Red Light & Speed
- Cambridge - Speed
- Chevy Chase Village - Speed
- Cottage City - Red Light
- Frederick - Red Light
- Frederick - Speed
- Gaithersburg - Speed
- Hagerstown - Speed
- Hyattsville - Speed
- New Carrollton - Speed
- Rockville - Red Light
- Rockville - Speed
- Takoma Park - Speed
- Salisbury - Speed
- Westminster - Red Light
These lists are posted for your reference, but should not be used to justify the approval of cameras in Waze Map Editor without first verifying the location and type of camera by other means, and that it is not part of a school zone speed camera program in a jurisdiction where the cameras are relocated on a regular basis. The lists may not be up to date, and may include all locations where cameras are permitted, but does not mean that a camera is present at that location at all times.
To do list
Many states and territories keep an active list of pending or closed actions that need to be done in the state by the editors. All editors are welcome to contribute to the list of activities.
|Visit the Maryland/To do page for ways to contribute to the map.|
The Waze Map Editor allows the enabling or restricting of U-turns using the green or red u-turn icons. U-Turns are legal in maryland with the following restrictions:
MD Transportation Code § 21-402(b) Vehicle turning left or making U-turn
(b) U-turn. -- If the driver of a vehicle intends to turn to go in the opposite direction, the driver shall yield the right-of-way to any approaching vehicle that is so near as to be an immediate danger.
MD Transportation Code § 21-602 U-turn on curve or crest of grade prohibited
(a) Curves. -- The driver of a vehicle on any curve may not turn to go in the opposite direction if the vehicle cannot be seen by the driver of any other vehicle that is within 500 feet and approaching from either direction.
(b) Crests. -- The driver of a vehicle on or approaching the crest of any grade may not turn to go in the opposite direction if the vehicle cannot be seen by the driver of any other vehicle that is within 500 feet and approaching from either direction.
The table below identifies the editors also designated as Area Managers or higher who are editing in Maryland. If you have any questions, please consider contacting them directly as needed. If you are an Area Manager that covers Maryland, or a USA Country Manager that does a lot of work in Maryland, please add yourself to this list (alphabetical by username) in the correct rank section.
The editor who also serves as the Regional Coordinator for Maryland is automatically listed at the top of the table. That editor may not be highly active in this state and therefore may not be listed separately in the table.
|Maryland — Area, State and Country Managers|
Regional Coordinator(s): CBenson ( ) and ply8808 ( )
GHO Display Name
| Country Managers (Mid Atlantic region)|
| CBenson(6) [ ]
|State Managers (Mid Atlantic region)|
| Kodi75(5) [ ]
| nzahn1(5) [ ]
| Area Managers |
| TerryPurdue(5) [ ]
|Country Manager|| |
Baltimore - Washington Metro
| subs5(5) [ ]
PG, MO, CH, CA, AA, and HO
|Foxxymito(4) [ ]||Frederick, Carroll, Howard, Baltimore, Anne Arundel|| |
Most active around Frederick City
| jr1982jr(4) [ ]
|Anne Arundel, PG, Baltimore City, Frederick, Washington, Allegany, Garrett, Northeast DC|| |
Also: Howard, Baltimore and Montgomery
| mtb2314(4) [ ]
|Montgomery County, MD, Boston, MA, and Davis, WV|| |
Also: Howard, Frederick, and Baltimore in MD; Northwest Washington DC; and portions of VA and PA
| Bugladen(3) [ ]
|Carroll, Baltimore, Howard, Anne Arundel|| |
|Comstockmine(3) [ ]||Salisbury Area|| |
| JasonN899(3) [ ]
|Baltimore, Harford, Howard, Anne Arundel|| |
Also: Around 695 & 95, Frederick & Carroll
|MarkInMd(3) [ ]||Baltimore, Harford, Carroll Counties|| |
Some Southern PA too
| tckma(3) [ ]
|Carroll, Baltimore|| |
Also: Howard, Frederick in MD; York, Adams in PA
| ArthurUSCG(3) [ ]
|St. Mary's County|| |
| baysidelass(2) [ ]
|Eastern Shore|| |
The following editors are also editing in the state and may be working towards an Area Manager position. Feel free to contact them for assistance in their respective areas.
| Other Area Editors |
|Username||General Editing Area||Comments|
|TwoEightZero(3) [ ]||Eastern Shore||CBBT-Bridgeville DE|
| mdswbkq(2) [ ]
|Washington DC metro toward Frederick|
Other states and territories
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