The amazing public response to the 5-day-old M4 Protest campaign(www.m4protest.org) suggests that thousands of vehicles will join the'slow drive' protest against M4 speed cameras.

There may be serious congestion on the M4 Motorway between junctions14 and 18 on Saturday 30th April between 10am and 2pm.

M4 Protest are talking all possible precautions to minimise trafficdisruption, including asking protest traffic to keep out of lane 3,liaising with Police and running the protest convoy at a target speedof 56mph.

The public response has been amazing with more than 30,000 web sitepage views in just five days and many hundreds of emails of support.It is impossible to know what the level of support will turn out to beon the day, but we have every reason to believe that it will beconsiderable.

Protest traffic will assemble at both Leigh Delamere andMembury Services from 10am on Saturday 30th April. At 11pm protestconvoys will leave both services travelling west from Membury and eastfrom Leigh Delamere.

We have discussed with Police the risk of service station car parkoverflow. If this happens, Police will have to close the slip roadbecause traffic backing up onto the Motorway would be dangerous. Itfollows that travellers should ensure that they have plenty of fuel toreach the next services.

Travellers may wish to consider alternative routes, alternative traveltimes, or may wish to join the M4 Protest. Details will be published to the M4 Protest web site(www.m4protest.org).

Protest organiser, Robin Summerhill said: "If the M4 Protest doescause serious congestion then we would see that as a very strongindication that the public believes policy is wrong. If people werenot upset, they wouldn't attend and there would be no congestion. Inshort, we blame the government."

Protest route overview:

London..J14 - A338Membury Services (Protest start - westbound)J15 - A419 - Swindon EastJ16 - A3102 - Swindon WestJ17 - A350 / A429Leigh Delamere Service (Protest start - eastbound)J18 - A46..Bristol