A UPS worker who lost a leg when a Staten Island driver slammed into him in April has died. NYPD and Staten Island prosecutors issued no summonses and filed no criminal charges in the case.

Tom Ryan, 52, was unloading packages from his truck at 2044 Hylan Boulevard on the morning of April 6 when a driver hit him with a Toyota sedan, according to the Staten Island Advance. NYPD told the Advance the driver was in the left, northbound lane and “tried to avoid hitting a pedestrian who crossed in front of his vehicle.”

The driver lost control of his vehicle and it swerved into the right lane, striking and pinning Ryan against the back of the UPS truck, police said.

Ryan, of Bayonne, died this week, the Advance reported.

The impact from the crash severed one of his legs, causing him to bleed profusely and go into cardiac arrest. He slipped into a coma due to the loss of oxygen to his brain, and never regained consciousness, his wife [Elise Ryan] said.

“He had an anoxic brain injury — that was more of his injury than even the leg,” the grieving wife explained.

The driver who killed Ryan was not identified. Despite indications that driver speed contributed to the crash — and was likely the difference between whether Ryan lived or died — no charges were filed by police, former district attorney Dan Donovan, or acting DA Daniel Master Jr., who took office in May, after Donovan was elected to Congress.

The crash that killed Tom Ryan occurred in the 122nd Precinct — where as of July local officers had ticketed 1,180 drivers for speeding in 2015 — and in the City Council district represented by Steve Matteo.

According to DOT, while overall NYC pedestrian deaths have dropped by nearly 50 percent in the last 30 years, the number of people killed by drivers while walking in Staten Island has not declined. But making streets safer is not a priority for Staten Island electeds.

Matteo has one of the worst records in the council on safe streets legislation. He was one of four council members, along with former Staten Island rep Vincent Ignizio, to vote against lowering the city speed limit. Matteo has said he believes speed cameras are a revenue scam.

When he was on the council, Matteo’s predecessor James Oddo, who is now borough president, called for requiring an environmental review for new bike lanes. Hours after news broke of Tom Ryan’s death, Oddo took to Twitter to brag about upcoming road widenings and call for more such projects on Staten Island.