Data Feeds
Welcome to the CHART WEB Data Feeds. We provide data in two formats, JSON and REST.
Field | Description |
---|---|
description | A brief description of the incident |
source | The source of event |
type | The type of event |
closed | State of event |
trafficAlertTextMsg | Traffic Alert Test Message |
incidentType | Description of incident type |
opCenter | The Maryland State Highways operations center that reported the incident |
participants | Incident response units |
createTime | Date and time the incident was created |
direction | Normal travel direction of the lane(s) affected by the incident |
lon | Taken with longitude to locate the incident on a map |
startDateTime | Date and time the incident was open |
lat | Taken with latitude to locate the incident on a map |
other | Reserved for future use |
lanesStatus | A brief description of the lane status |
county | County were event exists |
trafficAlert | Traffic alert flag |
lanes | Current state of the lanes. Values are open, closed, unknown and reversed |
vehicles | The number of vehicles involved in the incident |
lastCachedDataUpdateTime | Last update time on a server |
name | Name of the event |
id | Unique identifier assigned to each incident |
Field | Description |
---|---|
reason | A brief description of the reason the work is being performed |
closureStartDate | Date that work is expected to begin |
closureStartTime | Time of day that work is expected to begin |
publicComments | Comments regrding the closure that SHA wants to share with the public |
planned | This boolean field indicates planned closure |
trackingNumber | A unique identifier assigned to each closure |
closureEndDate | Expected completion date of work |
closureEndTime | Time of day work will cease |
closureDays | Days of the week that lanes will be closed |
lanesClosed | A brief description of the lane status |
description | A brief description of the closure |
direction | Normal travel direction of lanes closed |
opCenter | The Maryland State Highways operations center that reported the closure event |
createTime | Date and time closure was created |
name | Name assigned to closure event |
id | Unique identifier for each closure event |
source | Source of the cosure event |
type | Type of closure |
closed | This boolean field indicates event is closed |
trafficAlertTextMsg | The message associated with closure |
incidentType | The type of incident |
participants | SHA units participating in event |
lon | Taken with latitude to locate the incident on a map |
lat | Taken with longitude to locate the incident on a map |
startDateTime | Date and time that work is expected to begin |
other | Reserved for future use |
lanesStatus | Description of the closed lanes |
county | A county in Maryland |
trafficAlert | This boolean field indicates whether or not closure has traffic alert message |
lanes | Current state of the lane. Values are open, closed, unknown and reversed |
vehicles | The number of vehicles involved in the incident |
lastCachedDataUpdateTime | Last time when cache was updated on server |
Field | Description |
---|---|
description | Physical location of the traffic camera |
commMode | Camera comunication mode |
opStatus | Operation status of the camrea |
routePrefix | Route Type (US, MD, I) |
routeSuffix | Route suffix |
cctvIp | URL for access to the video streamer |
cameraCategories | Reserved for future use |
milePost | Locate the traffic camera on a map |
routeNumber | The route where camera located |
lon | Taken with longitude to locate the traffic camera on a map |
lat | Taken with latitude to locate the traffic camera on a map |
publicVideoURL | URL for access to the camera |
lastCachedDataUpdateTime | Last time cache was updated on the server |
name | Name assigned to the camera |
id | Unique identifier assigned to each camera |
Field | Description |
---|---|
description | The physical location of the speed sensor |
commMode | Speed sensor comunication mode |
opStatus | Operation status of the speed sensor |
rangeOnly | Flag indicate the range |
owningOrg | Organization owning speed sensor |
rotation | The angle of rotation of the TSS detection area that is parallel to the direction of travel |
direction | Direction of normal traffic flow |
lon | Taken with longitude latitude to locate the speed sensor on a map |
lat | Taken with latitude to locate the speed sensor on a map |
speed | Traffic speed. This may be supplied as a single value or as a speed range |
lastUpdateTime | Last Tme speed sensor data was updated |
zones | Grouping of speed sensor objects from a single detector, usually by direction |
lastCachedDataUpdateTime | Last time cache was updated on server |
name | Name assigned to the speed sensor |
id | Identifier assigned to the speed sensor |
Field | Description |
---|---|
description | The physical location of the weather station |
lastUpdate | Date and time of the last report from the weather station |
gustSpeed | Wind gust speed in miles/hour |
dewPoint | Dewpoint temperature in degrees Farenheit |
airTemp | Air temperature in degrees Farenheit |
visibility | Average visibility in miles |
pavementTemp | Pavement temperature in degrees Farenheit |
windDescription | Average wind speed and direction |
lon | Taken with latitude to locate the weather station on a map |
lat | Taken with longitude to locate the weather station on a map |
relativeHumidity | Relative humidity. |
precipitationType | Type of precipitation detected by the weather station |
lastCachedDataUpdateTime | Last time when cache was updated on the sever |
name | Name assigned to the speed sensor |
id | Unique identifier for each speed sensor |
Field | Description |
---|---|
description | Physical location of the highway message sign |
commMode | Communications mode of device |
msgHTML | The message that is currently displayed on the highway message sign in HTML format |
msgPlain | The message that is currently displayed on the highway message sign in plain text |
beaconsEnabled | Boolean field indicates whether or not the beacon is flashing (see hasBeacons field) |
msgMulti | The message that is currently displayed on the highway message sign formated as multiple lines |
opStatus | Operation status of the highway message sign |
lon | Taken with longitude to locate the highway message sign on a map |
lat | Taken with latitude to locate the highway message sign on a map |
hasBeacons | Boolean indicates if highway message sign has a beacon |
lastCachedDataUpdateTime | Last time cache was updated on server |
name | Name assigned to the highway message sign |
id | Identifier assigned to the highway message sign |
Field | Description |
---|---|
timeLifted | Date and time (Eastern Standard Time) Snow Emergency was lifted |
timeDeclared | Date and time (Eastern Standard Time) Snow Emergency was decalred |
countyPolygons | County boundaries effected by snow emergency |
countyID | Id of the county effected by snow emergency |
snowEmergencyExceptionMsg | Text describing exceptions to the Snow Emergency |
lastCachedDataUpdateTime | Last time when cache was update on server |
name | County affected by snow emergency |
id | Unique identifier for the snow emergency |
Field | Description |
---|---|
County | County effected |
Shop | Shop name |
Interstate | Interstate Weather Road Conditions |
Primary | Primary Weather Road Conditions |
Secondary | Secondary Weather Road Conditions |
Last Update | Last time data was updated |
Note: Equipment currently appearing in the data feed will be deprecated in a future release |