Suffolk MPs and Business leaders are to meet the Transport Secretary this afternoon to call on him to cancel proposals to toll part of the A14.
The MPs say the Suffolk economy will suffer if drivers are made to pay to use the road between Cambridge and Huntingdon.
But the Government say it's fair for motorists to pay a share to fund a major upgrade of the A14.
The A14 is partially blocked eastbound due to an accident near Junction 29 for Bar Hill in Cambridgeshire
The crash involves two lorries. There is congestion to Junction 28, Cambridge Services.
Travel time is currently 60 minutes.
Delays on the A14, eastbound, at Cambridge between junctions 32 (Histon Interchange) and 33 (Milton Interchange).
It's due to an earlier accident. The vehicles have been moved on to the hard shoulder.
Drivers heading through Cambridgeshire today were held up for hours after a crash caused long delays.
A trailer carrying a lorry overturned last night on the A14 near Bar Hill, just north of Cambridge.
The road was closed for several hours and the problems have continued into the afternoon.
The M11 near Cambridge was also closed for two hours to try to ease congestion on the A14. Tanya Mercer reports.
Severe delays continue on the A14 in Cambridgeshire this lunchtime - but officials hope to have all lanes re-opened by 3pm.
Repairs to barriers and an over-turned lorry close to junction 29 at Bar Hill have led to major problems in both directions.
Delays have reduced to about 20 minutes, westbound, between junctions 29 and 31 (Girton / Cambridge) and 60 minutes, eastbound, between junctions 24 (Godmanchester) and 29.
One lane remains closed in both directions.
Traffic has returned to normal on the M11 at Cambridgeshire following this morning's delays.
Problems on the A14 this morning are continuing to have knock-on effects elsewhere in Cambridgeshire.
There are long delays of about two hours on the A14 in both directions due to an overturned lorry close to junction 29 at Bar Hill.
Queues are stretching back to junction 32 (Histon Interchange) on the westbound carriageway and to junction 23 (Spittals Interchange) eastbound.
Long delays on the A1 in both directions around the B661 at Buckden are adding to the problems on the A14.
And all lanes have now re-opened on the M11, having been closed earlier to stop traffic joining the A14, but there is still slow traffic, northbound, between junction 11 at Harston and junction 13 at Madingley.
Sian Berry, from the Campaign for Better Transport, explains why it believes high air pollution levels could scupper the government's plans to upgrade the A14.