Aiden McLuckie, 14, was hit by a car on the A76 at the bridge over Cessnock Water, near Hurlford in East Ayrshire, at about 5.10pm last Wednesday.
Emergency crews attended, but the schoolboy was pronounced dead at the scene.
In a statement released through Police Scotland one week on from the tragedy, Aiden’s family said: “We would like to firstly thank the two women and two off-duty police officers who were on the scene first with Aiden.
“Also, we would like to thank all of the emergency services that attended and everything they did to try and save our boy.
“And last but not least, we would like to thank all the community for reaching out, donating to Aiden’s memorial, and all the kind, loving messages, cards and flowers we have received. They mean the world and more at this devastating time.”
Aiden was described as a “loyal, loving, kind and caring wee guy”.
His family added: “We will be left with a massive hole in our family that will never be filled. We honestly don’t know how we will continue on without you in our lives. Rest in peace our beautiful boy, gone far too soon.”
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The male driver of the car involved and his two passengers were checked over by paramedics, but were not required to attend the hospital.
The road was closed for several hours to allow for investigation works, with Police Scotland once more appealing for anyone with information to come forward.
Sergeant Brian Simpson said: “Our thoughts remain with Aiden’s family and we remain in regular contact with them as our investigation continues.
“We are continuing to appeal for information and in the course of our investigation we have established that there may have been more vehicles in the area at the time than we initially thought.
“I would urge anyone who may have been on the A76 in the area around the time of the crash to review any dashcam footage from between 5pm and 5.10pm and contact us if they believe they have any information which could help.”
