Isolate bright areas (like car headlights) with Luma Key, then apply Gaussian Blur to the isolated layer to create a bloom effect. Create a Luma Transition in Adobe Premiere Pro
Import your footage into Premiere Pro and place it on the timeline. Go to the Effects panel (Shift+7). Search for "Luma Key" under Video Effects > Keying. Drag and drop the Luma Key effect onto your clip. luma key premiere pro free download
Pro Tip: Ultra Key handles anti-aliasing (smoothing) much better than the legacy Luma Key. Isolate bright areas (like car headlights) with Luma