Free Traffic Legal Advice

I received a Notice of Rejection to a PCN I appealed 130 days ago.

I am aware that Penalty Charge Notices issued under Traffic Management Act 2004 (for parking) require a response to appeals within 56 days set out in the Civil Enforcement of Road Traffic Contraventions (Representations and Appeals) Regulations (England).

However, LLATLA 2003 has no such statutory maximum time period. But, I have read before that the London Tribunal have made decisions applying a "reasonable time" of 90 days.

I'm wondering if this case precedent is frequently applied or if it varies and what sort of reasons would the Tribunal accept for a 130 day delay?

Whilst looking into this just now I found on their site:

Which states, "The adjudicators have decided that a Enforcement Authority should normally respond to representations within 3 months."

For context it is a HGV that has gone to a big construction site ( ) on a road called Imperial Road, that has a "No motor vehicles" restriction on part (between Emden St & Fulmead St) of the road (like a bus gate but a no motor vehicle gate) as part of some Clean Air Neighbourhood initiative. However, for the west end of the road, the main road that it meets at a T junction, New Kings Road, has signage indicating a "No motor vehicle" restriction on the entire Imperial Road ( & ). And you would go along this road around the block (King's Road, Lot's Road, Harbour Aveneue, Townmead Road, Imperial Road) to the the east end of the road having already gone past the "No motor vehicles" sign. On the east end there is signage indicating:
"No motor vehicles
Imperial Road
No through route
to
New King's Road" ( )

Which indicates to me there is a "No motor vehicles" restriction on the entire road. However, the restriction is only between two junctions about 50m apart so both the east and west ends of the roads are open to motor vehicles until the restricted section. But the signage on either end does not make it clear at which point along the road the restriction begins. There are no "100 yards ahead" type signs that one might expect for such a strict restriction. The correct route is  entering the road from the east, however, the signage on both ends is ambiguous and does not clealry inform motorists as to the effect of the TRO imo. As the whole road is not a no "Motor Vehicles" restriction, just a section of it in the middle.