Delaware State Police, Delaware
End of Watch Monday, August 8, 1955
Add to My HeroesWilliam F. Mayer
Trooper William Mayer was struck and killed by the driver of a tractor trailer while conducting a traffic stop on the DuPont Parkway near Smyrna, Delaware.
The driver of the tractor trailer had been drinking and fell asleep at the wheel before striking Trooper Mayer. The 26-year-old driver of the tractor trailer was charged with manslaughter and an unrelated grand larceny charge. He was convicted of manslaughter and sentenced to one year in jail and had his license revoked. Less than a year later he was in a one-car accident and was charged with driving with a revoked license.
Trooper Mayer was a US Army veteran of WWII and had served with the Delaware State Police for 7 years. He was survived by his wife, brother, and three sisters.
Bio
- Age 28
- Tour 7 years
- Badge Not available
- Military Veteran
Incident Details
- Cause Vehicular assault
- Weapon Automobile; Alcohol involved
- Offender Sentenced to 1 year
Most Recent Reflection
View all 14 ReflectionsUncle Billy was someone I wish I would have known . My mom his sister Margaret Mayer spoke fondly of him . I am grateful for all DSP troopers that risk their lives every day . William Mayer gave the ultimate sacrifice to keep the public safe …his life . Thank you Uncle Billy ❤️
Carrie Magathan, proud and loving niece
Niece
November 28, 2023
Recent LODD Deaths

Police Officer Jeremy R. Labonte
Roswell Police Department, GA
EOW: February 7, 2025

Officer Jason Roscow
North Las Vegas Police Department, NV
EOW: February 4, 2025

Major Jeffrey A. Burke
New Jersey State Police, NJ
EOW: December 31, 2024

Corporal Dennis Francis Kelly
Delaware State Police, DE
EOW: December 21, 2024

Officer Baldino Morales-Sánchez
Mayagüez Municipal Police Department, PR
EOW: January 25, 2025

Border Patrol Agent David Christopher Maland
United States Department of Homeland Security - Customs and Border Protection - United States Border Patrol, US
EOW: January 20, 2025

Sergeant Mark Butler
Navasota Police Department, TX
EOW: January 15, 2025

Deputy Sheriff Jesus Vargas
Brazoria County Sheriff's Office, TX
EOW: January 15, 2025

Police Officer II Colton Dale Pulsipher
Las Vegas Metropolitan Police Department, NV
EOW: December 12, 2024