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Londonderry to expand traffic counters and publish crash heat map to guide enforcement
Summary
Officials said the town will invest in permanent traffic-counting devices, improve crash-analysis integration with police records and publish a public-facing heat map of traffic incidents by June 2027 to support targeted enforcement and engineering changes.
Londonderry staff told the council on April 22 they plan to expand permanent traffic-counting sensors, improve crash-data analysis and publish a public-facing incident heat map to better target enforcement and roadway improvements.
The traffic-management team said the town currently relies on Central New Hampshire Regional Planning for spot counts but needs permanent, real-time devices and stronger integration with the police records-management system for crash-analysis. "Right now, we have four traffic counting devices, two of them don't work, and the other two we can't take the data out of," the traffic presenter said, describing the limitations of the current inventory.
Staff outlined a process to identify 12 priority corridors from a set of 44 locations and to prepare targeted action plans that could include enforcement, signal timing, striping, signage and capital upgrades. A public-facing heat map and a traffic-safety page with downloadable data are planned by June 2027 to help boards, residents and businesses understand patterns and priorities.
Next steps: the traffic-management working group will present a status report at the June meeting and continue collaborating with GIS staff to refine heat-map displays and priority-corridor implementation plans.
