A 47-year-old electrician was taken to a hospital in critical condition early today after being struck by a vehicle driven by an allegedly impaired 22-year-old man in Honolulu, police said.

At about 12:40 a.m., police said the 22-year-old man was traveling westbound on the Pali Highway on-ramp when he lost control of his vehicle and struck the rear of an unoccupied utility van parked in a construction work zone. The vehicle then struck a guardrail and the electrician who was behind an aerial boom truck.

Police said the electrician, from Ewa Beach, was pinned between the boom truck and the vehicle, about 53 feet east of the Queen Emma Street overpass. Tim Sakahara, spokesman of the state Department of Transportation, said the injured man is a contractor working on a lighting improvement project.

Paramedics treated the electrician and transported him to a hospital in critical condition.

Police said alcohol appears to be a factor in the crash. It’s unknown if speed was involved.

Officers arrested the driver on suspicion of first-degree negligent injury and operating a vehicle under the influence of an intoxicant.

In an e-mail, Sakahara said, “It is tragic that he was injured due to the alleged illegal behaviors of the driver involved.”

“As we continue to hope for his recovery, HDOT reminds drivers to obey the rules and law on the road,” he said adding motorists need to exercise caution when traveling through construction zones.