9-13. CTW-TIMs-ITIS-v20250507.xlsx
XLSX spreadsheet 834 KB Posted
- Solicitation number
- UDOT250259MP-1
- Issued by
- Utah
About this file
This file is an Excel spreadsheet (9-13. CTW-TIMs-ITIS-v20250507.xlsx) containing detailed traffic information and incident management codes for transportation systems, primarily focused on roadway conditions, warnings, and regulatory restrictions. The document provides an extensive catalog of standardized codes and descriptions for various traffic scenarios, including incident management, work zones, speed limits, traffic restrictions, road weather conditions, and roadway warnings. Each entry includes specific geofence descriptions, timing details, and suggested display icons for transportation information systems.
The spreadsheet is directly related to a Utah Department of Transportation (UDOT) Request for Proposal (RFP) seeking a contractor to develop, implement, and maintain a Vehicle-to-Everything (V2X) Maintenance and Management System. The contract is anticipated to be a single award with a five-year base term and five additional optional years. The solicitation encourages offerors to submit innovative ideas and expand upon the minimum requirements, with a focus on creating a comprehensive Connected Vehicle Ecosystem. The RFP aims to support advanced transportation information systems that can dynamically communicate road conditions, incidents, and safety warnings to vehicles and drivers.
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Sheet1
| general group | reference id | condition description | geofence description | timing description | suggested display icon | ITIS code and phrase sequence | |
| incident-management | incident_ahead | • Event or incident on or near roadway is affecting traffic flow. | |||||
| • This message is an upstream warning. | • Roadway path |
• Path ends within 50 feet of incident location
| • Path starts upstream from incident location at a distance determined by IOO traffic operations. | • Active period starts as soon as IOO can confirm an incident. | ||||
| • Active period ends when IOO confirms that the incident is cleared and normal traffic flow is restored. | ERROR:#VALUE! | 531 | 13569 | ||
| incident | ahead | ||||
| incident-management | right_lane_blocked_ahead | • Right/left lane is blocked due to an incident or event. Typically there are no temporary traffic control devices set up, there may be a responder that is providing a traffic break. |
• This message is an upstream warning.
• This is contrasted with a lane closure. • Roadway path
• Path ends within 50 feet upstream of lane blockage or point where responders are diverting traffic.
| • Path starts upstream from lane blockage at a distance determined by IOO traffic operations. | • Active period starts as soon as IOO can confirm lane blockage associated with an event or incident. | |||||
| • Active period ends when IOO confirms that the lane blockage is cleared and lane diversion is no longer required. | ERROR:#VALUE! | 8196 | 776 | |||
| right-lane | blocked-ahead | |||||
| incident-management | left_lane_blocked_ahead | ERROR:#VALUE! | 8195 | 776 | ||
| left-lane | blocked-ahead | |||||
| incident-management | center_lane_blocked_ahead | ERROR:#VALUE! | 8197 | 776 | ||
| center-lane | blocked-ahead | |||||
| incident-management | right_n_lanes_blocked_ahead | • Multiple lanes blocked right/left. |
• Number of blocked lanes must be specified.
• This message is an upstream warning • Roadway path
• Path ends within 50 feet upstream of lane blockage or point where responders are diverting traffic.
| • Path starts upstream from lane blockage at a distance determined by IOO traffic operations. | ERROR:#VALUE! | 13579 | <small number> | ||||||
| e.g. 12546 = 2 | 13588 | 776 | |||||||
| right | <number> | lane | blocked-ahead | ||||||
| incident-management | left_n_lanes_blocked_ahead | ERROR:#VALUE! | 13580 | <small number> | |||||
| e.g. 12546 = 2 | 13588 | 776 | |||||||
| left | <number> | lane | blocked-ahead |
work-zone road_construction • Identifies the extent of a workzone along a roadway. • Roadway path
• Start at beginning of defined construction zone
| • End at last downstream point of construction zone | • Active period starts when the work zone is first established on the roadway | |||
| • Active period ends when the work zone has been cleared from the roadway and normal traffic flow is restored. | ERROR:#VALUE! | 1025 | ||
| road-construction | ||||
| work-zone | right_lane_closed_ahead | • Right/left/center lane is closed due to construction or other planned activity. There are temporary traffic control devices set up to implement the lane closure. |
• This message is an upstream warning.
• This is contrasted with an incident related lane blockage. • Roadway path
• Path ends where traffic control devices begin the lane closure taper.
| • Path starts upstream from lane closure at a distance determined by IOO traffic operations. | • Active period starts when the temporary traffic control devices are being set up to implement the lane closure. | |||||
| • Active period ends when all traffic control devices have been cleared from the roadway and normal traffic flow is restored. | ERROR:#VALUE! | 8196 | 771 | |||
| right-lane | closed-ahead | |||||
| work-zone | left_lane_closed_ahead | ERROR:#VALUE! | 8195 | 771 | ||
| left-lane | closed-ahead | |||||
| work-zone | center_lane_closed_ahead | ERROR:#VALUE! | 8197 | 771 | ||
| center-lane | closed-ahead | |||||
| work-zone | right_n_lanes_closed_ahead | • Multiple lanes closed right/left. |
• Number of lanes closed must be specified.
• This message is an upstream warning • Roadway path
• Path ends where traffic control devices begin the lane closure taper for the final lane being closed.
| ERROR:#VALUE! | 13579 | <small number> | |||||||
| e.g. 12546 = 2 | 13588 | 771 | |||||||
| right | <number> | lane | closed-ahead | ||||||
| work-zone | left_n_lanes_closed_ahead | ERROR:#VALUE! | 13580 | <small number> | |||||
| e.g. 12546 = 2 | 13588 | 771 | |||||||
| left | <number> | lane | closed-ahead | ||||||
| work-zone | look_out_for_workers | • Identifies area of a work zone that is active and has workers present | • Roadway Path | ||||||
| • Path bounds area where workers are present and begins and ends within 200 feet on either side of this area. | • Message is active only when workers are present | ERROR:#VALUE! | 6952 | ||||||
| look-out-for-workers | |||||||||
| work-zone | right_shoulder_closed_ahead | • Right/left shoulder is closed due to construction or maintence work. | |||||||
| • This message is an upstream warning. | • Roadway Path | ||||||||
| • Path ends at the point where the shoulder closure begins | • Active period starts when the shoulder restriction is first established on the roadway | ||||||||
| • Active period ends when the shoulder restriction has been cleared from the roadway. | ERROR:#VALUE! | 8208 | 771 | ||||||
| right-shoulder | closed-ahead | ||||||||
| work-zone | left_shoulder_closed_ahead | ERROR:#VALUE! | 8209 | 771 | |||||
| left-shoulder | closed-ahead | ||||||||
| work-zone | road_construction_ahead | • Identifies location of upcoming road construction. | |||||||
| • This message is an upstream warning | • Roadway Path | ||||||||
| • Path ends at point where road construction zone begins | • Should be active in parallel with the associated work zone. | ERROR:#VALUE! | 1025 | 13569 | |||||
| road-construction | ahead | ||||||||
| work-zone | road_construction_two_way_traffic | • Identifies section of road where two way traffic is temporarily imposed due to required traffic diversion. | • Roadway Path | ||||||
| • Path starts and ends to cover roadway section where two way traffic is temporarily imposed. | • Active period starts as soon as preparation begins on the roadeay to establish the two way traffic flow. | ||||||||
| • Active period ends when all traffic control devices associated with the two way flow have been cleared from the roadway and normal traffic flow is restored. | ERROR:#VALUE! | 1025 | 13593 | ||||||
| road-construction | both-directions-of-travel | ||||||||
| work-zone | end_road_construction | • Indicates that the vehicle has exited the construction zone. | |||||||
| • This message is downstream from the construction zone. | • Roadway Path |
• Path begins within 50 feet downstream from the end of the construction zone.
| • Path is between 0.1 to 0.25 miles long | • Should be active in parallel with the associated work zone. | ERROR:#VALUE! | 13583 | 1025 | ||
| end | road-construction | |||||
| work-zone | road_construction_congestion_ahead | • Identifies location of heavy congestion ahead due to road construction, with slow moving traffic likely requiring vehicle to reduce speed. | ||||
| • This message is an upstream warning | • Roadway Path |
• Path should end near the end-of-queue even somewhat downstream of end-of-queue is acceptable.
• Path must start upstream from end-of-queue, minimum upstream buffer distance (defined by IOO) from end-of-queue must maintained by updating TIM. • Active period starts when construction congestion has built up and meets IOO defined traffic slow down thresholds.
• Active period ends when congestion has dropped below IOO defined traffic thresholds.
| • The dynamic nature of congestion may require IOOs have have automated queue monitoring and TIM generation/update to support this messaging. | ERROR:#VALUE! | 1025 | 263 | 13569 | |||
| road-construction | traffic-congestion | ahead | |||||
| work-zone | road_construction_be_prepared_to_stop | • Identifies location of likely stopped traffic ahead due to road construction. | |||||
| • This message is an upstream warning. | • Roadway Path |
• Path should end near the end-of-queue or at the location where vehicles stop for the construction site traffic control.
| • Path must start upstream from the construction site stop location the minimum upstream buffer distance (defined by IOO). The start location should be upstream from the normal end-of-queue generated by the construction site stop location. | • Active period starts when the work zone stop location is first established on the roadway | ||||
| • Active period ends when the work zone stop location has been cleared from the roadway and normal traffic flow is restored. | ERROR:#VALUE! | 1025 | 7201 | ||
| road-construction | be-prepared-to-stop |
| speed-limit | speed_limit_n_mph | • Identifies the current regulatory speed limit along a section of roadway | • Roadway Path | |||||||
| • Path starts and ends to cover roadway section to which the speed limit applies. | • Active period starts when the IOO initiates the regulatory speed limit on a road section. | |||||||||
| Active period ends when the IOO changes the regulatory speed limit or removes the regulatory reduced speed limit. | ERROR:#VALUE! | 268 | <small number> | |||||||
| e.g. 12589 = 45 | 8720 | |||||||||
| speed-limit | <number> | mph | ||||||||
| speed-limit | speed_limit_reduced_n_mph_ahead | • Identifies an upcoming road section that has a regulatory speed limit that is reduced compared to the roadway posted speed limit | ||||||||
| • This message is an upstream warning | • Roadway Path | |||||||||
| • Path ends at the point where the regulatory speed limit begins. | • Should be active in parallel with the associated reduced speed-limit zone | ERROR:#VALUE! | 268 | 12302 | <small number> | |||||
| e.g. 12589 = 45 | 8720 | 13569 | ||||||||
| speed-limit | reduced | <number> | mph | ahead | ||||||
| speed-limit | advisory_speed_n_mph | • Identifies an advised speed along a section of roadway based on IOO criteria. |
• May be temporary or permantent advised speed.
| • See curve speed warning for advised speed on curves. | • Roadway Path | ||||||||
| • Path starts and ends to accurately cover roadway section to which the advisory speed applies. | • Active period starts when the IOO initiates the advised speed and ends when the IOO revokes the advised speed. | ERROR:#VALUE! | 7712 | 268 | <small number> | ||||
| e.g. 12589 = 45 | 8720 | ||||||||
| advice | speed-limit | <number> | mph |
| traffic-restrictions | closed_to_traffic | • Identifies a section of roadway that is currently closed to traffic | ||||
| • Temporary road closure for any reason, weather conditions, incident, or construction. | • Roadway Path | |||||
| • Path starts and ends to accurately cover roadway section that is closed to traffic. | • Active period starts when the IOO initiates the road closure and ends when the road is reopened for traffic. | ERROR:#VALUE! | 769 | |||
| closed-to-traffic | ||||||
| traffic-restrictions | closed_for_the_season | • Identifies a section of roadway that is under seasonal closure. | ||||
| • Long-term annual, seasonal road closure. | • Roadway Path | |||||
| • Path starts and ends to accurately cover roadway section that is closed to traffic. | • Active period starts when the IOO initiates the road closure and ends when the road is reopened for traffic. | ERROR:#VALUE! | 774 | |||
| closed-for-the-season | ||||||
| traffic-restrictions | closed_to_traffic_local_access_only | • Identifies a section of roadway that is restricted to through traffic, but access to local locations from road is available. | ||||
| • Temporary road traffic restriction for any reason, weather conditions, incident, or construction. | • Roadway Path | |||||
| • Path starts and ends to accurately cover roadway section that is limited to local traffic. | • Active period starts when the IOO initiates the road traffic restriction and ends when the IOO reopens the road for all traffic. | ERROR:#VALUE! | 769 | 2567 | ||
| closed-to-traffic | local-access-only | |||||
| traffic-restrictions | closed_to_traffic_ahead | • Identifies location of upcoming road closure. | ||||
| • This message is an upstream warning | • Roadway Path |
• Path ends at point where road closure begins
| • Path starts no more than 2 miles upstream from beginning of road closure. | • Should be active in parallel with the associated road closed to traffic. | ERROR:#VALUE! | 769 | 13569 | |||||||||
| closed-to-traffic | ahead | ||||||||||||
| traffic-restrictions | truck_restriction_gross_weight_limit_n_lbs | • Identifies a section of roadway that has a gross vehicle weight limit restriction in place. | |||||||||||
| • Temporary or permanent road weight restriction for any reason. | • Roadway Path | ||||||||||||
| • Path starts and ends to accurately cover roadway section with the vehicle weight restriction. | • Active period starts when regulatory maximum weight truck restriction is initiated. | ||||||||||||
| • Active period ends when regulatory maximum weight truck restriction is removed. | ERROR:#VALUE! | 2563 | 2577 | <large number> | |||||||||
| e.g. 11605 = 60000 | 8739 | ||||||||||||
| truck-restriction | gross-weight-limit | <number> | pounds | ||||||||||
| traffic-restrictions | wind_blow_over_minimum_weight_truck_restriction | • Identifies a section of roadway where a minimum weight truck restriction is in place due to high winds and blow over risk. | |||||||||||
| • Temporary, regulatory minimum weight truck restriction due to high wind blow-over risk. | • Roadway Path | ||||||||||||
| • Path starts and ends to accurately cover roadway section where the regulatory minimum weight truck restriction is in place. | • Active period starts when regulatory minmum weight truck restriction is initiated. | ||||||||||||
| • Active period ends when wind subsides and regulatory minimum weight truck restriction is removed. | ERROR:#VALUE! | 5127 | 2563 | 2569 | 7682 | 2577 | <large number> | ||||||
| e.g. 11594 = 25000 | 8739 | ||||||||||||
| strong-winds | truck-restriction | no-high-profile-vehicles | below | gross-weight-limit | <number> | pounds | |||||||
| traffic-restrictions | restriction_no_trailers | • Identifies a section of roadway where a regulatory restriction is in place disallowing vehicles with trailers. | |||||||||||
| • Temporary or permenant, regulatory restriction on vehicles with trailers due to conditions making trailer traffic hazardous, such as road geometry, road surface condtions, or construction. | • Roadway Path | ||||||||||||
| • Path starts and ends to accurately cover roadway section where the regulatory trailer restriction is in place. | • Active period starts when IOO initiates a regulatory trailer restriction. | ||||||||||||
| • Active period ends when IOO removes the regulatory trailer restriction. | ERROR:#VALUE! | 2561 | 2568 | ||||||||||
| restrictions | no-trailers | ||||||||||||
| traffic-restrictions | chains_required_commercial_vehicles | • Identifies a section of roadway where a regulatory restriction is in place requiring snow chains for all commercial motor vehicles. |
• Temporary regulatory restriction due to hazardous road surface traction condtions requiring snow chains for Commercial Vehicles.
| • Often referred to as a level-1 Chain Law | • Roadway Path | ||||
| • Path starts and ends to accurately cover roadway section where the chain law regulatory restriction is in place. | • Active period starts when IOO initiates a regulatory chain law restriction. | ||||
| • Active period ends when IOO removes the regulatory chain law restriction. | ERROR:#VALUE! | 6148 | 9255 | ||
| snow-chains-required | commercial-vehicles | ||||
| traffic-restrictions | snow_tires_or_chains_required_all_vehicles | • Identifies a section of roadway where a regulatory restriction is in place requiring snow tires or snow chains for all vehicles. |
• Commercial vehicles must have chains.
• Other than commerical vehicles must have snow tires and all wheel drive?
• Temporary regulatory restriction due to hazardous road surface condtions requiring traction enhancement for all vehicles.
| • Often referred to as a level-2 Chain Law | • Roadway Path | ||||
| • Path starts and ends to accurately cover roadway section where the chain law regulatory restriction is in place. | • Active period starts when IOO initiates a regulatory chain law restriction. | ||||
| • Active period ends when IOO removes the regulatory chain law restriction. | ERROR:#VALUE! | 6156 | 9217 | ||
| snow-tires-or-chains-required | all-vehicles | ||||
| traffic-restrictions | snow_chains_prohibited | • Indicates that the current section of road and beyond no longer requires (and in fact prohibits) snow chains on vehicles. |
• Identifies that due to roadway damage caused by snow chains, there is a regulatory restriction to remove snow chains from all vehicles.
• The roadway where this message appears must be free from any snow or ice where chains would be of benefit.
• The roadway where this message appears must have areas where vehicles can pull out of traffic to safely remove chains. • Roadway Path
• Path starts at point where chains should be removed after a driving through a regulatory chain law area.
| • Path is 1 mile long to provide time for driver recognition of new regulatory restriction. | • Active period starts when IOO initiates a regulatory chain law restriction. | ||
| • Active period ends when IOO removes the regulatory chain law restriction. | ERROR:#VALUE! | 6149 | |
| snow-chains-prohibited |
safety-service-area chain_up_area_ahead • Indicates an IOO designated area, outside of traffic lanes, where vehicles can stop and apply snow chains. • Roadway path
• Path starts upstream from chain up area at a distance determined by IOO traffic engineering.
| • Path ends upon reaching the designated chain up area. | • Active period starts and ends in parallel with chain law restrictions in the affected area. | ERROR:#VALUE! | 6148 | 11791 | 13569 | |||
| snow-chains-required | parking-area | ahead | ||||||
| safety-service-area | brake_check_area_ahead | • Indicates an IOO designated area, outside of traffic lanes, where vehicles can stop and check their brake condition before entering a steep downgrade. | • Roadway path |
• Path starts upstream from the brake check area at a distance determined by IOO traffic engineering.
| • Path ends upon reaching the designated brake check area. | • Typically a permanent active period. | ERROR:#VALUE! | 7174 | 11791 | 13569 | |||
| test-your-brakes | parking-area | ahead |
roadway-warning right_curve_speed_warning • Identifies location of right/left roadway curve with advised reduced speed. • Roadway Path
• Path starts upstream of curve at a distance determined by IOO traffic engineering.
| • Path ends at the exit of the curve where the advised speed is no longer relevant. | • Active period starts and ends based on IOO determination that curve speed warning is appropriate. | |||||||||||
| • May be active permanently | ERROR:#VALUE! | 13599 | 7712 | 8026 | 268 | <small number> | ||||||
| e.g. 12579 = 35 | 8720 | |||||||||||
| right-turn | advice | on-curve | speed-limit | <number> | mph | |||||||
| roadway-warning | left_curve_speed_warning | ERROR:#VALUE! | 13594 | 7712 | 8026 | 268 | <small number> | |||||
| e.g. 12579 = 35 | 8720 | |||||||||||
| left-turn | advice | on-curve | speed-limit | <number> | mph | |||||||
| roadway-warning | right_hairpin_curve_speed_warning | • Identifies location of upcoming right/left hairpin curve with advised reduced speed. | • Roadway Path |
• Path starts upstream of hairpin curve at a distance determined by IOO traffic engineering.
| • Path ends at the exit of the curve where the advised speed is no longer relevant. | • Active period starts and ends based on IOO determination that curve speed warning is appropriate. | |||||||||||
| • May be active permanently | ERROR:#VALUE! | 13617 | 7712 | 8026 | 268 | <small number> | ||||||
| e.g. 12569 = 25 | 8720 | |||||||||||
| hairpin-right | advice | on-curve | speed-limit | <number> | mph | |||||||
| roadway-warning | left_hairpin_curve_speed_warning | ERROR:#VALUE! | 13618 | 7712 | 8026 | 268 | <small number> | |||||
| e.g. 12569 = 25 | 8720 | |||||||||||
| hairpin-left | advice | on-curve | speed-limit | <number> | mph | |||||||
| roadway-warning | multi_curve_speed_warning | • Identifies location of upcoming series of roadway curves with advised reduced speed. | • Roadway Path |
• Path starts upstream of series of curves at a distance determined by IOO traffic engineering.
| • Path ends at the exit of the final curve of the series where the advised speed is no longer relevant. | • Active period starts and ends based on IOO determination that curve speed warning is appropriate. | |||||||||
| • May be active permanently | ERROR:#VALUE! | 7712 | 8026 | 268 | <small number> | |||||
| e.g. 12579 = 35 | 8720 | |||||||||
| advice | on-curve | speed-limit | <number> | mph | ||||||
| roadway-warning | steep_downgrade_n_percent_grade | • Identifies location of a steep downgrade with percent grade specified. | • Roadway Path | |||||||
| • Path covers IOO defined road section with a known, measured steep downgrade. | • Typically a permanent active period. | ERROR:#VALUE! | 13589 | <small number> | ||||||
| e.g. 12550 = 6 | 8748 | 8757 | ||||||||
| hill | <number> | percent | grade | |||||||
| roadway-warning | steep_downgrade_next_n_miles | • Identifies that there is an upcoming steep downgrade and its approximate length specified. | ||||||||
| • This message is an upstream warning. | • Roadway Path |
• Path starts upstream of beginning of downgrade at no more than 1 mile from beginning of down slope.
| • Path ends where the down slope begins. | • Typically a permanent active period. | ERROR:#VALUE! | 13589 | <small number> | |||||||
| e.g. 12550 = 6 | 8748 | 8757 | 13582 | <small number> | |||||||
| e.g. 12552 = 8 | 8712 | ||||||||||
| hill | <number> | percent | grade | next | <number> | miles | |||||
| roadway-warning | runaway_vehicle_escape_ramp_1_mile_right | • Identifies an upcoming runaway vehicle escape ramp, on the right/left of the road and its approximate distance ahead. | |||||||||
| • This message is an upstream warning. | • Roadway Path |
• Path starts approximately 1 mile upstream from the escape ramp start.
| • Path ends where it is possible for a run-away vehicle to move out of traffic flow and line up to take the escape ramp. | • Message may alternate with the runaway-vehicle escape ramp closed message during those times when the escape ramp is out of service. | |||||||||||
| • May be active permanently | ERROR:#VALUE! | 9256 | 8234 | 12545 | 8712 | 13569 | 7989 | |||||
| runaway-vehicles | escape-ramp | 1 | mile | ahead | on-the-right | |||||||
| roadway-warning | runaway_vehicle_escape_ramp_1_mile_left | ERROR:#VALUE! | 9256 | 8234 | 12545 | 8712 | 13569 | 7990 | ||||
| runaway-vehicles | escape-ramp | 1 | mile | ahead | on-the-left | |||||||
| roadway-warning | runaway_vehicle_escape_ramp_closed | • Notifies that an upcoming runaway vehicle escape ramp is closed. | ||||||||||
| • This message is an upstream warning. | • Roadway Path |
• Path starts approximately 1 mile upstream from the escape ramp start.
• Path ends where it is possible for a run-away vehicle to move out of traffic flow and line up to take the escape ramp. • Activated when IOO confirms that the escape ramp is out-of-service due to runaway vehicle use or other maintainance service.
• Deactivated when IOO confirms that the escape ramp is back in service and available for use.
| • Typically alternates with the escape ramp upstream notification message. | ERROR:#VALUE! | 9256 | 8234 | 770 | |||
| runaway-vehicles | escape-ramp | closed |
| traffic-conditions | traffic_congestion_ahead | • Identifies location of heavy congestion ahead with slow moving traffic likely requiring vehicle to reduce speed. | |
| • This message is an upstream warning | • Roadway Path |
• Path should end near the end-of-queue even somewhat downstream of end-of-queue is acceptable.
| • Path must start upstream from end-of-queue, minimum upstream buffer distance (defined by IOO) from end-of-queue must maintained by updating TIM. | • Very fast end-of-queue build up may require IOO have automated queue monitoring and TIM generation/update. | ERROR:#VALUE! | 263 | 13569 | ||
| traffic-congestion | ahead | |||||
| traffic-condtions | be_prepared_to_stop | • Identifies location of heavy congestion ahead with stop-and-go traffic likely requiring vehicle to stop. | ||||
| • This message is an upstream warning | • Roadway Path |
• Path should end near the end-of-queue even somewhat downstream of end-of-queue is acceptable.
| • Path must start upstream from end-of-queue, minimum upstream buffer distance (defined by IOO) from end-of-queue must maintained by updating TIM. | • Very fast end-of-queue build up may require IOO have automated queue monitoring and TIM generation. | ERROR:#VALUE! | 7201 | |
| be-prepared-to-stop |
road-weather-conditions wind_gusts_exceed_n_mph • Identifies a section of roadway with measured wind gusts exceeding limits.
• Temporary warning for measured dangerous wind conditions.
| • Determination based on IOO predefined criteria. | • Roadway Path | |||||||||
| • Path covers IOO defined road section where wind coditions can be detected, measured, and confirmed. | • Activated when IOO confirms winds exceeding predefined criteria. | |||||||||
| • Deactivated when IOO confirms winds have subsided below predefined criteria. | ERROR:#VALUE! | 6916 | 5131 | 7759 | <small number> | |||||
| e.g. 12594 = 50 | 8720 | |||||||||
| alert | gusty-winds | may-exceed | <number> | mph | ||||||
| road-weather-conditions | strong_winds_alert_high_profile_vehicles | • Identifies a section of roadway with high winds that significantly increase blow over risk for high-profile vehicles. |
• Alert for high-profile vehicles that there is a high-blow over risk due to measured winds.
| • Determination based on IOO predefined criteria. | • Roadway Path | ||||||||
| • Path covers IOO defined road section where wind coditions can be monitored. | • Activated when IOO confirms winds exceeding predefined criteria. | ||||||||
| • Deactivated when IOO confirms winds have subsided below predefined criteria. | ERROR:#VALUE! | 6916 | 5127 | 9233 | 6405 | ||||
| alert | strong-winds | high-profile-vehicles | hazardous-driving-conditions | ||||||
| road-weather-conditions | slippery_wet_pavement | • Identifies a section of roadway where precipitation has left the roadway wet with reduced traction. |
• Warning for vehicles that road condtions may be slick due to known precipitation.
• Determination based on IOO predefined criteria for road surface condtion. • Roadway Path
• Path covers IOO defined road section where road coditions can be monitored.
| • May apply to long multi-mile road sections. | • Activated when IOO confirms road surface conditions meeting predefined traction critera. | ||||
| • Deactivated when IOO confirms road surface conditions have improved and are close to normal dry road condtions. | ERROR:#VALUE! | 5897 | 5895 | ||
| slippery | wet-pavement | ||||
| road-weather-conditions | surface_water_hazard | • Identifies a road section where IOO can confirm significant standing water on roadway. |
• Road area with standing water that presents a significant hazard for vehicle hydroplaning.
• Determination based on IOO predefined criteria for road surface condtion. • Roadway Path
• Path covers IOO defined road section where accumulated water can be confirmed and road coditions can be monitored.
| • Typically applies to short road sections where significant standing water occurs. | • Activated when IOO confirms road surface water conditions meeting predefined critera. | |||
| • Deactivated when IOO confirms road surface water conditions have improved and no longer pose significant hydroplaning danger. | ERROR:#VALUE! | 5893 | ||
| surface-water-hazard | ||||
| road-weather-conditions | dense_fog_ahead | • Identifies location of heavy fog on roadway ahead. |
• Required visibility thresholds defined by IOO.
• This message is an upstream warning • Roadway Path
• Path should end near the beginning of the dense fog or even some distance into the fog area is acceptable.
• Path starts upstream from fog area where the visibility is good and unaffected by fog. This upstream distance is determined by IOO traffic operations.
| • Will require monitoring by IOO traffic operations to ensure upstream warning location remains valid in face of changing conditions. | • Activated when IOO confirms fog accumulation and visibility conditions meet predefined critera. | ||||
| • Deactivated when IOO confirms visibility conditions have improved and no longer disrupt traffic. | ERROR:#VALUE! | 5377 | 13569 | ||
| dense-fog | ahead | ||||
| road-weather-conditions | flooding_ahead | • Identifies location of flooding on roadway ahead. |
• Required water level thresholds defined by IOO. Typically more serious than a surface water hazard. IOO responsible to monitor and determine if situation evolves to a road closure.
• This message is an upstream warning • Roadway Path
• Path starts upstream of flooded roadway at a distance determined by IOO traffic engineering.
| • Path ends where flood waters encroch on roadway. | • Activated when IOO confirms road flooding conditions meeting predefined critera. | ||||
| • Deactivated when IOO confirms road flooding conditions have improved and no longer impede traffic. | ERROR:#VALUE! | 1301 | 13569 | ||
| flooding | ahead | ||||
| road-weather-conditions | ice | • Identifies a road section where IOO can confirm significant ice buildup on roadway. |
• Limited road area with ice that presents a significant hazard for vehicle traction and control.
• Determination based on IOO predefined criteria for road surface icing condtion. • Roadway Path
• Path covers IOO defined road section where ice accumulation can be confirmed.
| • Path may extend upstream from an isolated ice patch to provide advance warning. | • Activated when IOO confirms road surface icing conditions meeting predefined critera. | |||
| • Deactivated when IOO confirms road surface icing conditions have improved and no longer pose significant vehicle traction danger. | ERROR:#VALUE! | 5906 | ||
| ice | ||||
| road-weather-conditions | icy_patches | • Identifies a road section where IOO can confirm multiple areas of ice on roadway. |
• Multiple, isolated areas of icing, along a longer section of road, are a hazard for vehicle traction and control.
• Determination based on IOO predefined criteria for road surface icing condtion. • Roadway Path
• Path covers IOO defined roads where multiple icing areas can be confirmed.
| • Typically applies to longer road sections with multiple isolated areas of icing contrasting with the more isolated "ice" warning. | • Activated when IOO confirms road surface icing conditions meeting predefined critera. | |||
| • Deactivated when IOO confirms road surface icing conditions have improved and no longer pose significant vehicle traction danger. | ERROR:#VALUE! | 5907 | ||
| icy-patches | ||||
| road-weather-condtions | severe_weather | • Identifies a road section or area where IOO can confirm severe weather condtions exist. |
• Any active severe weather that poses a significant safety hazard for drivers is a candidate for this warning, for example heavy rain, blizzard, or hail.
• Determination based on IOO predefined criteria for weather conditions. • Roadway Path or Polygon
• Path or Area covers IOO defined roads where severe weather conditions are confirmed to exist.
• Requires real-time monitoring by IOO to update the affected area if the severe weather is moving. • Activated when IOO confirms severe weather conditions meeting predefined critera.
• Deactivated when IOO confirms severe weather has disapated or has moved outside of IOO area of purview.
| Requires real-time monitoring by IOO to ensure timely updates. | ERROR:#VALUE! | 6916 | 4865 | ||
| alert | severe-weather | ||||
| road-weather-condtions | visibility_reduced | • Identifies a road section or area where IOO can confirm visibility is significantly reduced. |
• Any active atmospheric condtion that reduces driver visibility. Smoke from fires, blowing dust or sand, or significant haze.
• Determination based on IOO predefined criteria for degraded visibility. • Roadway Path or Polygon
• Path or Area covers IOO defined roads where driver visibility is reduced.
• May extend outside of area with reduced visibility (upstream or downstream), but should not be more than 1/2 mile outside of the area.
• Requires real-time monitoring by IOO to update the affected area if the visibility limiting condtions are moving. • Activated when IOO confirms reduced visibility conditions meeting predefined critera.
• Deactivated when IOO confirms visibility limiting conditions have disapated.
| • Requires real-time monitoring by IOO to ensure timely updates. | ERROR:#VALUE! | 5383 | ||
| visibility-reduced | ||||
| road-weather-conditions | blowing_snow | • Identifies a road section or area where IOO can confirm blowing snow is a hazard for driving. |
• Any situation where wind driven snow is a driving hazard due to visibility or snow accumulation.
• Determination based on IOO predefined criteria for degraded driving conditions. • Roadway Path or Polygon
• Path or Area covers IOO defined roads where the blowing snow hazard exists.
• May extend outside of area of blowing snow (upstream or downstream), but should not be more than 1/2 mile outside of the area.
• Requires real-time monitoring by IOO to update the affected area as it changes. • Activated when IOO confirms blowing snow conditions meeting predefined critera.
• Deactivated when IOO confirms wind and snow conditions have disapated.
| • Requires real-time monitoring by IOO to ensure timely updates. | ERROR:#VALUE! | 5385 | |
| blowing-snow |
File details come from the government source that posted it. Updated .