Intersection Daylighting

Intersection daylighting is a safety improvement that makes streets safer by restricting parking near intersections. This makes it easier for drivers and pedestrians to see and respond to each other. Daylighting can be accomplished quickly and affordably by placing flexible, vertical posts at intersections and adjacent to crosswalks.

Why do we use intersection daylighting?

Intersection daylighting improves safety at intersections. Removing illegally parked cars reduces blind spots, giving drivers, pedestrians, and cyclists a better view of the intersection. This provides more time to respond to other approaching street users. It can also help slow turning vehicles down so they’re more likely to see and yield to pedestrians in the crosswalk.

Before Intersection Daylighting
Before Intersection Daylighting
After Intersection Daylighting
After Intersection Daylighting
High-visibility crosswalks can reduce pedestrian injury crashes up to

Chen, L., C. Chen, and R. Ewing. The Relative Effectiveness of Pedestrian Safety Countermeasures at Urban Intersections – Lessons from a New York City Experience. (2012).

Advance yield or stop markings and signs can reduce pedestrian crashes up to

Zeeger et al. Development of Crash Modification Factors for Uncontrolled Pedestrian Crossing Treatments, FHWA, (2017).

Frequently Asked Questions about Intersection Daylighting

White flex post installation is a relatively quick and low-cost process. Posts can be installed and maintained by City staff. Unlike many other safety improvements, flex post installation does not require a lengthy permitting or approval process through state agencies. Flex posts can also be temporarily removed if necessary due to emergencies, heavy snow, or other conditions.

Yes. This treatment can be made permanent by adding infrastructure such as curb extensions (bulb outs) or vegetated curb extensions (planted areas surrounded by curb that capture stormwater runoff and help to prevent flooding.) These projects have many benefits, but also require more time, planning, approvals, funding, and may require traffic and pedestrian diversion during construction.

The intersection daylighting treatment, along with other low-cost design treatments to improve intersection safety, are recommended in the City’s Vison Zero Plan. Locations for intersection safety improvements were prioritized based on several factors, including:

  • Located along the High Injury Network
  • Located near a school
  • Top 10 intersections with the most serious and fatal crashes
  • Had poor crosswalk condition based on the crosswalk condition inventory
  • Was NOT part of a larger, planned street improvement project

Daylighting does not remove legal parking spaces. It prevents parking in areas where it is illegal to park by state and city law.

In Pennsylvania, it is illegal to park within 20 feet of a crosswalk at an intersection or within 30 feet of any flashing signal, stop sign, yield sign, or other traffic control device located at the side of a roadway. It is also illegal to park on the sidewalk; in an intersection; on a crosswalk; within 15 feet of a fire hydrant; or on the roadway side of a vehicle already stopped or parked along the edge or curb of the street (double parking). For additional information, please see the PA DMV Driver’s Manual,Pennsylvania Code (Title 75, § 3353), or City of Lancaster Code (§285-15).

The length of daylighting areas is based on illegal parking areas in accordance with state and city law, as well as traffic direction.

For example, on the approach to a stop sign, it is illegal to park within 30 feet of the sign – thus, the daylighting area will be 30 feet from the stop sign on one side of the street. Stop signs may be located at slightly different distances from each intersection, which can lead to minor variations at different locations.

On a two-way street, one side of the street will not have a stop sign (because it is receiving vehicles from other legs of the intersection.) Thus, the daylighting area on that side will only be 20 feet long as measured from the crosswalk.

2022 Pedestrian Improvement Plan2022 Pedestrian Improvement Plan

Intersection daylighting, as well as other low-cost intersection improvements have been placed at locations around the City, primarily along the High Injury Network as identified in the Vision Zero Plan. Please see the map below (noting that some minor changes were made between the 2022 plan and 2023 installation).

Public notice was not given to immediate neighbors for installation of this infrastructure because it does not require road closure or removal of legal parking spaces, and can be completed in a relatively short period of time. The City is working on additional educational materials about these treatments, and is open to other methods of notification.

Daylighting areas located along designated snow emergency routes are removed in November and December in preparation for the winter. Posts will be replaced in the spring. The City Department of Public Works is responsible for winter street maintenance and snow plowing. The City is required to plow designated snow emergency routes from curb to curb.