North End Neighborhood Slow Zone Pilot

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The Ada County Highway District (ACHD), in partnership with the City of Boise, has launched a North End Neighborhood Slow Zone Pilot to improve safety for people walking, biking, rolling, and driving.

Lower Speed Limits

Beginning in January, ACHD reduced posted speed limits to 20 mph on select North End streets, including 8th Street, 9th Street, 13th Street, 15th Street, 16th Street, Fort Street, Hays Street, and Harrison Boulevard.

Crossing Flags

To support safer pedestrian crossings, ACHD installed pedestrian crossing flags at all marked crosswalks along Harrison Boulevard, not including the Hill Road intersection.

Speed and Parking Enforcement

The slow zone is supported by Boise Police enforcement. Enhanced parking enforcement is also underway to address illegal parking near intersections, stop signs, and crosswalks, helping improve visibility and reduce conflicts for all road users.

Education

The pilot is accompanied by outreach efforts by the City, Police and ACHD to encourage safer driving behaviors.

Monitoring and Evaluation

ACHD and the City of Boise will continue to monitor the pilot to evaluate whether the changes reduce vehicle speeds on corridors that typically operate between 25 and 30 mph.


Please note that this webpage will be updated as more information becomes available.


The Ada County Highway District (ACHD), in partnership with the City of Boise, has launched a North End Neighborhood Slow Zone Pilot to improve safety for people walking, biking, rolling, and driving.

Lower Speed Limits

Beginning in January, ACHD reduced posted speed limits to 20 mph on select North End streets, including 8th Street, 9th Street, 13th Street, 15th Street, 16th Street, Fort Street, Hays Street, and Harrison Boulevard.

Crossing Flags

To support safer pedestrian crossings, ACHD installed pedestrian crossing flags at all marked crosswalks along Harrison Boulevard, not including the Hill Road intersection.

Speed and Parking Enforcement

The slow zone is supported by Boise Police enforcement. Enhanced parking enforcement is also underway to address illegal parking near intersections, stop signs, and crosswalks, helping improve visibility and reduce conflicts for all road users.

Education

The pilot is accompanied by outreach efforts by the City, Police and ACHD to encourage safer driving behaviors.

Monitoring and Evaluation

ACHD and the City of Boise will continue to monitor the pilot to evaluate whether the changes reduce vehicle speeds on corridors that typically operate between 25 and 30 mph.


Please note that this webpage will be updated as more information becomes available.

  • Slow Zone Update

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    Summary

    ACHD collected traffic speed data in February and in April.

    Overall, data shows that the Pilot, which combined engineering, enforcement, education and enthusiastic support of the neighborhood, has made progress in lowering vehicle speeds. On average, speeds decreased by 2 mph, with some streets seeing up to a 4 mph reduction, though reductions varied based on street and prior speed limit.

    A 1 to 1.5 MPH difference in average speed is considered within the typical variation on any given street. In lower speed limit ranges, speeds reduced in the 3-4 MPH range shows a change in driver behavior. There are a variety of factors that could have contributed to change. For instance, the speed reductions on Fort St could be influenced by the current downtown traffic signal re-timing effort. The average speed reduction on Harrison Blvd of 4 MPH at two separate locations is significant. This reduction may be impacted by emotional investment in the pilot.


    We appreciate the strong support of local law enforcement for their dedication to both education and enforcement throughout the North End. From January through March, Boise Police Department conducted over 1,000 traffic stops, compared to 243 in the same time last year. 266 Traffic Citations were issued, a 619% increase from last year.

    Code Enforcement was also hard at work ensuring residents are well informed and parking near intersections and stop signs remain clear.

    So where do we go next? ACHD and the City of Boise are actively discussing possible parking signing and curb painting changes. ACHD will gather another set of speed data in about three months. In addition to the numbers, we are interested in your perspective, and will partner with the NENA Board to conduct a survey for neighbors later this summer.

    Speed data is available here.

    Summary

    ACHD collected traffic speed data in February and in April.

    Overall, data shows that the Pilot, which combined engineering, enforcement, education and enthusiastic support of the neighborhood, has made progress in lowering vehicle speeds. On average, speeds decreased by 2 mph, with some streets seeing up to a 4 mph reduction, though reductions varied based on street and prior speed limit.

    A 1 to 1.5 MPH difference in average speed is considered within the typical variation on any given street. In lower speed limit ranges, speeds reduced in the 3-4 MPH range shows a change in driver behavior. There are a variety of factors that could have contributed to change. For instance, the speed reductions on Fort St could be influenced by the current downtown traffic signal re-timing effort. The average speed reduction on Harrison Blvd of 4 MPH at two separate locations is significant. This reduction may be impacted by emotional investment in the pilot.


    We appreciate the strong support of local law enforcement for their dedication to both education and enforcement throughout the North End. From January through March, Boise Police Department conducted over 1,000 traffic stops, compared to 243 in the same time last year. 266 Traffic Citations were issued, a 619% increase from last year.

    Code Enforcement was also hard at work ensuring residents are well informed and parking near intersections and stop signs remain clear.

    So where do we go next? ACHD and the City of Boise are actively discussing possible parking signing and curb painting changes. ACHD will gather another set of speed data in about three months. In addition to the numbers, we are interested in your perspective, and will partner with the NENA Board to conduct a survey for neighbors later this summer.

    Speed data is available here.

Page last updated: 29 Apr 2026, 09:48 AM