Upgrading Lighting to LED replaces highpressure sodium light bulbs with LED light bulbs in street lights . Upgrading Lighting to LED increases the visibility of pedestrians in crosswalks through greater color contrast and larger areas of light distribution .

Cost $$

OTHER

LIMIT

Variable Speed Limits ( VSLs ) can improve safety performance and traffic flow by reducing speed variance and thereby improving speed harmonization .

Cost $$

Low Cost / Quick Build alternative available

Relevant Crash Types Nighttime

Relevant Crash Types Nighttime Speed Management

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APPENDIX B : COUNTERMEASURES TOOLBOX B-48